Douluo: Build the Kingdom of God starting from Wuhun Palace

Although he heard something was wrong from his good friend's words and was very worried about his family clan, Yu Xiaogang calmed down his mood as quickly as possible and devoted himself to teaching the Shrek team three days later.

The Shrek team focused on team battles. They first swept through the Soul Sect-level teams in the Soto Spirit Arena. After sweeping the Soul Sect-level teams, they would then use Ning Rongrong to start a Soul King-level team battle. copy.

At the same time, Tian Hao did not relax his teachings to the three disciples. After practicing with the sword to a certain level, he began to tailor basic swordsmanship training for the three girls.

"Teacher, did you pick up the wrong sword?"

Looking at the two swords in Zhu Zhuqing's hands on the left, then at Ao Jiu'er's soft sword on the right, and finally at the giant sword in front of him, Ning Rongrong was confused, thinking that the teacher might have picked up the wrong sword.

The blade of this sword was inserted halfway into the ground, but it was still higher than himself.

You must know that due to the previous hundred thousand years of refining the soul ring, her height has increased to 1.6 meters. Although she is not comparable to Zhuqing, she is still good among women.

By visual inspection, this sword is definitely over four meters tall, and it feels similar to the dragon-headed crutch of Dragon Duke Meng Shu that I saw in the Sunset Forest last time.

Is this really a sword for me?

Zhu Zhuqing and Ao Jiuer also looked at the giant sword, which was too big.

In comparison, Ning Rongrong's figure was already pretty and delicate, and she looked even smaller standing in front of this giant sword. The two of them couldn't imagine the scene of Ning Rongrong swinging this giant sword.

"This is a swordsmanship specially created for you by my master. It's called Giant Swordsmanship. It also comes with a set of Void Sword Techniques. You need to practice the method of controlling distractions to at least nine points of mind before you can use it."

Tian Hao was cheating seriously, but it was not completely cheating. At least the special effects of the copycat giant sword technique and void sword technique were not bad.

After saying that, he held his hand in vain, and the four-meter-long giant sword that was originally stuck on the ground was broken down into eleven pieces. One fell into his hand, nine circled around, and the last one fell at his feet.

Stepping on the last flying sword and adsorbing it tightly with his soul power, Tian Hao stretched out his hand to lift Ning Rongrong and fixed it on the flying sword. Then the sword flew straight into the sky, accompanied by nine flying swords around him, and followed his instructions The mind forms a sword array, traveling vertically and horizontally, teaching in person.

It's just that he overestimated the courage of the young disciple. Ning Rongrong, who was flying at such a rapid speed for the first time, burst out a high note that could wipe out the world. Tian Hao, who was so close, trembled when he heard it.

It's too harsh!

"ah!"

While bursting out with a soprano, Ning Rongrong instinctively hugged her teacher, who was really frightened.

Although Oscar's flying mushroom sausage had been flown before, it was only at low altitude. Now it is flying hundreds of meters in the air, and the flying speed is much faster than the flying mushroom sausage.

"It's finally quiet!"

Tian Hao, who couldn't stand the soprano, used his soul power to seal his disciple's mouth, which made him feel better.

"Look carefully, the Void Sword Technique is divided into two parts: defense and attack. Now I will show you the defense method..."

Seeing that Ning Rongrong calmed down a little after her mouth was sealed, Tian Hao explained while controlling the nine flying swords to maintain the high-speed trajectory of the sword array.

First, let the nine flying swords appear as a ball hovering around the body, performing offensive defense without blind spots, which is enough to crush any offensive. Even with the addition of sword intention, it can even crush and resist spiritual attacks.

This is not a simple rotation, the inner trajectory has been carefully calculated, so that it can defend in all directions without blind spots.

After showing the defensive method, Tian Hao showed the offensive method, turning the nine flying swords inward, using himself as the target to launch a fierce and continuous offensive.

Tian Hao waved his long sword and blocked the attacking flying swords one by one.

Ning Rongrong, who had calmed down, hid in the teacher's arms and stared at the flying sword technique with wide eyes.

After demonstrating the attack method of the Void Sword Technique, Tian Hao used the copycat version of the giant sword technique, using the giant sword in his hand as the foundation to induce the other flying swords to merge into the original giant sword and stab downwards.

There was no earth-shattering movement, and it penetrated accurately into the previous sword marks.

After landing on the ground, Tian Hao lifted up the little disciple who was still hugging him and put it aside. He explained calmly: "This set of void swordsmanship was created by my master based on Oscar's flying mushroom gut. Sword art, as long as your control over the soul power is strong enough, you can accelerate infinitely, and the power will also increase as the speed increases.

In addition, giant swordsmanship is mainly melee swordsmanship..."

He told the young disciples about the two sets of swordsmanship that he copied from the village. He specially copied Oscar's flying mushroom intestines as the basis for this thing.

"You can add the mental protection of your soul bone skills to the flying sword to strengthen the control, and use the spiritual power of the mental protection as the foundation to carry the amplified soul skills of your martial soul. This needs to be studied by yourself..."

Ning Rongrong and the three of them were all shocked when they heard it, especially Ning Rongrong who had personally experienced those two swordsmanships at high altitude before and knew how powerful they were.

"Teacher, you created this flying sword technique using only Oscar's flying mushroom sausage?"

Ao Jiuer couldn't help but ask, this teacher is too fierce.

She had experienced Oscar's flying mushroom sausage, and she didn't pay much attention to it. She only regarded it as an auxiliary soul skill, but who would have thought that the teacher would create a whole set of swordsmanship based on the effect of that soul skill.

Is this the genius?

"The greatest advantage of us humans is our ability to learn. We can learn from anyone and anything. The same goes for soul skills. Even if they are young soul skills, their power level is not advanced enough, but the essence of the use of power is still there. There will be a place for us to learn.

As long as we understand these, we can create suitable self-created soul skills for ourselves.

When you reach my level, you will understand that it is actually very simple to create this kind of self-created soul skill.

By the way, Rongrong, since you have some relationship with the Haotian Sect, learn the method of exerting force in their Nine-Character Art and the Great Sumeru Hammer. The Nine-Character Art can be used to enhance the Void Sword Art, and the secret method of the Great Sumeru Hammer should be able to compete with the Giant Sumeru Hammer. Fusion of swordsmanship.

Also, this giant sword is condensed by the master's sword energy for you to practice with. You need to use your own martial soul to condense the diamond giant sword. Only that kind of martial soul creation can be brought to the soul master competition for use. "

After some reminders, his eyes turned to Zhu Zhuqing, and he used sword energy to condense two swords in his hands.

"Zhuqing, I will teach you the swordsmanship of Jade Girl Su Xin. This swordsmanship is divided into two sets. The two can be perfect when combined with each other. It can be used for one-on-one combat, and can also be used for group battles. It can be used for both defense and offense. Take a good look. .”

After saying that, Tian Hao stepped on Zixia Step and waved his two swords to perform the Jade Girl Su Xin Sword Technique that was copied from the village not long ago.

Of course, although it is called Jade Girl Su Xin Sword Technique, it actually has nothing to do with it. It is just a copycat based on that setting, mainly because I am too lazy to use my brain to think about it.

They are two kinds of swordsmanship in themselves, but they can complement each other in terms of moves. It is not wrong to say that they are perfect.

Zhu Zhuqing watched carefully and tried to memorize the teacher's sword movements.

Because it was developed based on Zixia Step, it is not too difficult to remember and understand.

"Jiu'er, your wine spirit is a kind of liquid, and it also affects your spiritual will. You can blend it into your own attacks, or blend it into the air.

There is moisture in the air itself, which can be integrated into it, and a realm can even evolve based on it.

In response to this, I have made modifications based on my own evil-fighting swordsmanship based on your situation..."

After deceiving Zhu Zhuqing, Tian Hao deceived Ao Jiu'er and copied the evil-fighting sword technique that Ma Zai's younger brother copied based on Ao Jiu'er's situation, and then used it.

After performing the swordsmanship, Tian Hao transferred the swordsmanship from the village into the minds of the three women respectively, completing today's sword teaching.

"This is just something my master created for you. You can adjust and improve it according to your own circumstances in the future, and eventually evolve it into your own swordsmanship.

Go back and practice it carefully. If you don’t understand, you can come find me as a teacher. "

After saying that, he waved his hand to signal the three female disciples to go back. Tian Hao continued to study the chessboard. This was the only thing he could use to kill time during this period.

Of course, I only divided my mind into two parts for fun, the other thoughts were on the cultivation within my own body.

"is teacher!"

The three women, who had just recovered from the shock, sensed the information that appeared in their minds. They respectfully worshiped it and went down the mountain, preparing to study it carefully when they went back.

"I really look forward to Brother Ning seeing his daughter wielding the giant sword. It will definitely be exciting."

Tian Hao looked forward to it with a mysterious smile.

The following days were relatively uneventful. After the Shrek team swept the Soul Sect-level team here in the Soto Great Soul Fighting Field, they decisively opened a copy of the Soul King-level team using Ning Rongrong as a guide.

Taking a closer look at the past few soul master competitions, except for those geniuses who have more unique personalities and have soul sect level cultivation, the other academy teams have soul king level cultivation.

Those at this level are their opponents.

And not long after, a fateful encounter happened.

"Looking at his temperament and clothes, he must have a good background."

In the Soto Spirit Arena, Flanders looked at a team not far away, guessing the origin of the other team.

Unlike Dai Mubai and others who almost never watch team battles and strive to improve themselves to the greatest extent, Flanders basically watches the team battles in the Soto Spirit Arena, especially those new teams.

During this time, a powerful Soul King-level team came from out of town, and I heard that it had already caused the Soto Soul Arena to lose a lot of money.

"They are all excellent. They are no worse than the teams from your academy. Even the previous teams couldn't push their full strength."

Ao Ying came over and handed a piece of information to Flanders as required.

According to the rules of the Great Soul Fighting Arena, other people's information cannot be leaked to the team, but as long as the effects of soul skills and other people's privacy are not disclosed, the name, martial soul, and soul ring configuration are not important information.

The reason why I personally brought this information this time was mainly because the members of that team were too special.

"It's really not that simple!"

After reading that simple information, Flanders became unusually solemn.

Although the information is very simple, even if it is separated individually, it is nothing, but when they are together, people have to think more, and at the same time, they can roughly guess the origins of those people, and even guess which college the other person comes from.

"You don't know their soul ring configurations either?"

Flanders asked. He had seen the battles of that team in the past few days, but he had never seen the opponent manifest a soul ring. He thought that the Soto Grand Soul Fighting Arena knew that the information he wanted to hand over was still the soul ring configuration. Blank.

Ao Ying was speechless, and there was nothing he could do about this. After all, the Great Soul Fighting Field itself stipulated that no one should actively ask for information about the soul masters. It was already very rare to get the opponent's name and spirit.

"They also have the secret method of hiding soul rings like Canghui Academy. Maybe their soul ring configuration is very unusual!"

Yu Xiaogang said firmly, since the other party has revealed his soul power level, it is reasonable to say that there is no need to hide the soul ring, but since he chooses to hide it, the configuration of the soul ring he possesses is definitely not simple.

At least it's much better than the best configuration. It may have broken the rules like Xiao San and Ma Hongjun, but I don't know to what extent the other party has broken the rules.

Turning his eyes towards the team in the distance, Yu Xiaogang stared closely at a tall young man inside with a complicated expression.

He and Flanders had also seen the battle of that team in the past few days, and saw the opponent's martial arts. One of them was particularly familiar, and even his name was familiar to him.

I didn't expect that I would meet my relatives in this situation.

Yu Xiaogang was looking at the young man, Tian Hao was also looking at the young man, and he was complaining about the imprecision of the third young master in his previous life.

When Yu Xiaogang was young, he left the Blue Lightning Tyrant Dragon Sect and went to Wuhun City for further study. After that, he summarized the ten core competitiveness of the Wuhun. After being kicked out of Wuhun City, he followed Flanders and Liu The two dragons met one after another and entered the soul master world together.

Then Yu Xiaogang got married, and Yu Luo Mian came to disrupt it. After that, Yu Xiaogang disappeared and never returned to the Blue Lightning Tyrant Dragon Sect.

This adds up to more than 20 to nearly 30 years, but the third master's book states that Yu Tianheng and Yu Xiaogang got along with each other when they were children, and the relationship was still very good.

It doesn't make sense logically, but San Shao's books are just like that. It's an old problem and it doesn't affect reading.

In this real Douluo world, there is no such logical error. Yu Tianheng may know the existence of Yu Xiaogang, but he has never met him.

Similarly, Dai Mubai and others were also looking at the Imperial Fighter Team not far away, because that was their opponent today.

The Shrek Academy side was observing the Imperial Fighting Team over there, and the Imperial Fighting Team was naturally observing this side and also obtained a piece of information.

"White Tiger Martial Spirit."

Xue Qinghe looked at Dai Mubai across from him with interest. He had once led a team to Wuhun City to participate in the finals on behalf of the Tiandou Empire, and had personally seen the form possessed by the White Tiger Wuhun and the commonly used soul skills.

So after seeing Dai Mubai's martial spirit possession and the form of his martial spirit a few days ago, I determined his identity.

At the same time, as the crown prince of the Tiandou Empire, he has done a lot of research on the royal family members of the Star Luo Empire, especially the princes of this generation.

He paid the most attention to Davis, who was also the prince, but he did not leave out the others. He also knew that the third prince of Xingluo had fled to the Tiandou Empire and joined Shrek Academy.

But now it's about to happen.

At the same time, there are many people and martial spirits in the Shrek team that he is interested in. Today's showdown will definitely be interesting.

“The Shrek team has a lot to learn from, such as their attitude and gameplay towards spirit fighting team battles, so that we can maximize our progress.

I won’t lay out tactics for tonight’s battle, you can choose your own opponents. "

Withdrawing his gaze, Xue Qinghe briefly explained the upcoming battle.

As the captain of the team, he should have arranged the tactics, but he saw something worth learning from the Shrek team and was ready to imitate it.

I have to say that that way is better for improving yourself and the team, and is much better than simply winning.

Although my team is already strong, it is not strong enough.

At least he wasn't sure he could deal with Tianjiao's unreasonable stuff, and even his own substitute wasn't completely sure he could win this soul master competition.

"I want that evil-eyed white tiger."

Yu Tianheng was the first to speak and stared at Dai Mubai.

As the young sect master of the Blue Lightning Overlord Dragon Sect, he is not only trained in strength, but also has a lot of knowledge about the soul master world. Naturally, he knows the White Tiger Martial Spirit of the Xingluo Royal Family.

It was a top-level martial spirit that was not weaker than their Blue Electric Tyrannosaurus Rex, especially the spirit fusion technique formed with the Nether Spirit Cat's martial spirit was extremely powerful.

Even if he is a Soul King and is one level higher than his opponent, he is still not completely sure that he can defeat the Netherworld White Tiger fused by his opponent.

The martial soul fusion skill is not just a magical skill in the soul master world.

"Can they use martial soul fusion skills?"

Dugu Yan looked at the information in his hand and murmured suspiciously. Their information was much more detailed, including all the battle records of Team Shrek since their debut as a group.

But it doesn't say that the soul fusion skill of Netherworld White Tiger has ever appeared. Is it because the opponent has never shown it as a trump card, or has it not been practiced yet?

"If they have martial soul fusion skills, don't stop them, I'm confident to deal with them."

Yu Tianheng said in a deep voice, the fighting spirit rising in his heart.

He has never stopped practicing hard in these years, and he has carried the purple thunder power that was initially refined by his grandfather. His combat power is comparable to that of the Soul Emperor or even the Soul Saint.

If you use the Purple Thunder Seven Strikes, it will be enough to compete with a Contra-level powerhouse in a short period of time.

But this is not enough, far from it.

He has not yet reached the threshold of genius, and needs a stronger opponent to stimulate his potential.

At the same time, his soul power has reached level 59, and he is only a little short of breaking through to level 60. When the time comes, he can ask Dugu Yan's grandfather to use that soul sealing skill, which will at least help him refine a hundred thousand year soul ring. Strength will be greatly improved.

"Brother Tianheng is so confident?"

Xue Ke, who was following Xue Qinghe, said with a smile that she was traveling with the imperial brother this time and she also liked the team battle of the soul masters.

She even has strong swordsmanship skills, and sometimes she takes the place of Sister Ye to play.

"This is not called confidence. I am much bigger than them."

Yu Tianheng said helplessly that his family knew about his family affairs. He was older than the evil-eyed white tiger and the ghost civet cat, and his soul power level was also higher.

If you don't have the confidence to fight against the opponent's Netherworld White Tiger, you might as well find a piece of tofu and kill it.

Not to mention that the Nether Civet Cat was promoted to the soul sect level not long ago, so its soul power level will definitely not be too high. Even if it uses martial soul fusion skills to evolve into a Netherworld White Tiger, the increase will not be too outrageous.

However, the Nether Civet itself was not weak in strength. He even felt that that woman was the strongest person in the Shrek team and the most difficult opponent.

"Brother Tianheng chose the evil-eyed white tiger, and Sister Yan must choose the ghost civet cat."

Turning her bright eyes to Dugu Yan, Xue Ke asked with a sly smile.

"Little girl, you dare to tease your sister and me."

Hearing the girl's teasing, Dugu Yan reached out and tickled the other person.

"No, Sister Yan, I know I was wrong. Brother Huang, please save me."

Xue Ke, who was caught by Dugu Yan, quickly begged for mercy and asked his royal brother for help.

Looking at the two girls fighting, Xue Qinghe shook his head in amusement.

"Yiran, this time you are that Tang San's opponent. Remember to show mercy. He has a special status and there are many strong people behind him. Don't beat him to death."

Turning to Meng Yiran, who was staring at someone in the Shrek team in the distance, Xue Qinghe assigned combat tasks and gave an emphatically reminder.

The first time he took the team to watch the Shrek team's team battle, he discovered Meng Yiran's abnormality, and then listened to Meng Yiran's grievances with Tang San.

Since we are facing each other today, let’s make a settlement.

"I will cut off all his soul bones."

Meng Yiran said bitterly, her teeth itching with anger when she thought of being robbed of a piece of her external soul bone.

Although he later obtained four external soul bones from the genius of the Broken Clan, no one would have too many of these treasures.

And it seems that Tang San's attached soul bone can also evolve quickly by swallowing the Man-Faced Demon Spider. At first, the Man-Faced Demon Spider was only at the thousand-year level, but after swallowing the Ten Thousand-Year Man-Faced Demon Spider last time, its The soul bone has evolved to the ten thousand year level.

She and grandma would never feel wrong about that level of soul power.

The value of the externally attached soul bone that can be quickly evolved by devouring it can be imagined. I had lost a lot of money at the beginning.

This time we must make Tang San pay the price!

Seeing Meng Yiran's angry expression, Xue Qinghe didn't say much.

They had already paid attention to that Tang San and knew he was Tang Hao's son.

They don't want to provoke Haotian Sect at this stage, as long as no lives are lost.

Anyway, Sword Douluo and Jian Zong are watching here, and they are not afraid that Haotian Zong will really dare to show up and cause trouble.

At the same time, Tang San can be used as a guide to observe the actions of Tang Hao and the Haotian Sect. Otherwise, it would be very troublesome for the Haotian Sect to keep doing things in secret.

Compared with enemies hidden in the dark, he prefers enemies that can be seen. At least he has to see some traces, so that he will not be too passive.

"Brother Emperor, I also want to play."

Suddenly his arms were hugged, and Xue Qinghe turned around to see who else could be there other than his own sister.

Dugu Yan has returned to Yu Tianheng, and is looking at the Shrek team with him, staring closely at Zhu Zhuqing, obviously very interested in it.

She had seen the battles of Team Shrek before. Zhu Zhuqing liked to target the control soul masters in the opponent's team to hone himself, and he would definitely target her this time.

I just don’t know if the Nether Civet Cat can resist his own poison.

"Okay, okay!"

With her sister holding her arms and begging, Xue Qinghe scraped her delicate nose lovingly and complied.

"After the war, don't mess around. Use the advantage of flying to eliminate the opponent's food-type soul master first. Otherwise, it will be difficult to fight if they all fly."

Xue Qinghe made arrangements for his younger sister. This younger sister is quite talented. In addition, she was personally taught and mentored by the dean of Huanyin Academy. Although she is only at the soul master level now, her strength is comparable to that of the soul sect, and she can deal with a food major on the other side. It's not difficult to be a soul master.

The food-based soul skills that allow people to fly are indeed a bit tricky. It's best to clean them up first, otherwise it will be very troublesome.

"yeah!"

Seeing that the emperor agreed, Xue Ke cheered excitedly, knowing that he could participate in another team battle.

The two sides were not kept waiting for long, and soon it was the turn of Shrek Team and Royal Dou Team to face off. Both sides went to the preparation room to make final preparations.

The leaders of both teams would be led to exclusive private rooms to watch the game. However, Xue Qinghe and Qin Ming, the team leader, did not go to the reserved private rooms, but came to the leader's private room of Team Shrek.

"Boom!"

Knocking gently on the door, Xue Qinghe stood outside and waited quietly.

Soon the door opened, and it was Flanders who opened the door.

There was no way, one of the other two was too strong and the other had a tough temper, so he had to do this job.

Looking at Xue Qinghe outside the door, Flanders frowned, but when his eyes turned to Qin Ming, he changed into a look of surprise.

"Student Qin Ming has met the dean."

Seeing Flanders looking over, Qin Ming bowed respectfully.

He has always been grateful to Flanders, and he always remembers his cultivation back then.

"It's really you, kid. I thought I saw it wrong when I looked at the back."

Flanders smiled, very satisfied with Qin Ming's attitude.

He has taught many students, but Qin Ming is one of the few that makes him most satisfied.

It's a pity that this child is too reserved and calm. He was like a little adult back then and didn't learn the essence of what he did. However, it does not hinder this child's excellence.

"Have you joined Tiandou Royal Academy?"

Immediately thinking about it, Flanders saw that the Royal Dou Team was a team specially trained by the Tiandou Royal Academy. Qin Ming was now with Xue Qinghe, so he must have joined the Tiandou Royal Academy.

"Teacher Qin Ming is the best teacher of our Tiandou Royal Academy. He is even qualified to become the academy's education committee in the future. If it were not for the special nature of our Tiandou Royal Academy, he would have the chance to become the dean of the academy."

Xue Qinghe spoke on his behalf, with unabashed admiration for Qin Ming in his words.

Qin Ming is indeed outstanding. Not only does he have great qualifications, but his character and style of conduct are also impeccable. He is a perfect man. He intends to train him to become the education committee member of the Royal Academy in the future, helping him to further control the Royal Academy.

It's a pity that Tiandou Royal Academy has regulations that the president of the academy can only be a prince from the royal family. The current person in charge of Tiandou Royal Academy is his uncle, Prince Snow Star.

"Qin Ming is the best student in our Shrek Academy. He has this potential."

Flanders took it for granted, and was even very proud of it.

But this performance caused Xue Qinghe to give him a lot of points in his heart, and it could even be regarded as a character flaw.

This kind of person is like this when he is not rising. If there is a chance to rise in the future, he will definitely act more arrogantly and be an uncontrollable person.

"What's the matter with His Royal Highness coming here this time?"

After feeling proud, Flanders turned his eyes to Xue Qinghe, knowing that the other party must have a purpose for coming here, and he even had a rough guess in his mind.

After all, Lao Yue is the only one on their side who can cause such a person to come in person.

Sure enough, Xue Qinghe said sincerely: "There is no Prince Tiandou here, only the swordsman Xue Qinghe. I want to see Mr. Yue and ask for advice."

Xue Qinghe lowered his posture very low. As a swordsman, and a swordsman who was about to master the realm of swords, he could naturally sense the realm of swords that enveloped the entire Great Soul Fighting Arena, and the source was that Mr. Yue. On the body.

Moreover, he had also heard Meng Yiran talk about the performance of the Sword Qi clone in the Sunset Forest, so he naturally did not dare to look down upon him.

I wanted to visit a few days ago, but I always hesitated. It wasn't until today that the two teams faced each other that I found an excuse to come and have a look.

"Lao Yue, I came to see you."

After taking a deep look at the Xueqing River in front of him, Flanders turned his head and shouted into the box.

They came to see Lao Yue. If they didn't see him, it would not be his turn to make the decision. At least he couldn't be Lao Yue's decision.

"come in."

The elegant and gentle voice came, and Flanders stepped aside, gesturing for the two of them to enter.

Xue Qinghe was not polite and stepped into the box. Qin Ming followed closely behind and closed the door of the box.

"Swordsman Xue Qinghe pays homage to Mr. Yue."

Walking next to someone, Xue Qinghe bowed.

As a swordsman, he should have enough respect for such a master of swordsmanship, and he really wanted to get his guidance to see if he could break through the bottleneck and evolve the realm of swords.

In fact, he had reached a bottleneck a few years ago. He was only one step away from the realm of evolutionary swords, but that one step away was like a chasm. He had tried many methods in the past few years but could not break through.