The counterattack system is only available in the Mahayana period

The air-raid shelter door seemed to have been broken open by some entity with brute force, squeezed out of shape, and twisted out of shape.

Xia Chao broke it open with all his strength and found that the material of the door was extremely strong. Even if he had practiced the "Dragon, Tiger and Arhat Strength", he could not make it break even a little bit.

"It should be some kind of mixed steel." Xia Chao knew that on the human side, there were tools for four- and five-star contracted beasts, which were made of special steel and were rare and expensive.

Rich people also like to use this specially made armor and weapons to be used by contracted beasts.

"It's harder than you think. The extreme material you made can withstand the attacks of five-star monsters, which are in the transformation stage. This door is stronger than that one. Only six-star monsters can break it open with full attack. .”

"This is a lost craft." Jiang Li could tell at a glance what the craft was for making this door, which involved technology that was not currently available in the Lingxi world.

According to the current development rate, it may take thousands of years to develop.

"Then this..."

"Is this a future building?" Qiushi entered the air-raid shelter and found that although the building was old, its technological level seemed to be much more advanced than it is now.

"Could it be that the human race in the future built a bomb shelter that can travel through time and space and traveled to the present?" Qiushi's imagination was wide open.

"..." Bai Xueling was speechless. It is true that the ignorant are fearless.

Do you know how much energy it takes to move an object of this size through time?

Do you know what level of technology is required to travel through time and space, and to what extent do you need to understand the way of time?

I'm afraid Ji Zhi will have to break through to the tribulation stage to be able to do this.

"Guess again."

Jiang Li didn't mind if they guessed a few more times. He wiped the wall and found that it had a history of two thousand years based on the degree of material wear.

The air-raid shelter was pitch dark, and he couldn't see his fingers. Jiang Li snapped his fingers, and rootless fire stretched from the door to the end.

Two rows of small fireballs looked like soldiers, illuminating the surroundings, allowing those who came to see the truth clearly.

Xiao Qing transformed into a little dragon as thick as a thumb, wrapped around Xia Chao's neck, and looked around curiously.

The air-raid shelter has also been attacked, and the walls have been deformed. There are also some sci-fi firearms scattered around, and there is a bone arm at the handle of the firearm.

Xia Chao imagined a picture:

The air-raid shelter door was knocked open by an extremely powerful monster. The humans hiding inside attacked with weapons, but the guns had no effect on the monster.

The monster was wreaking havoc and swallowed up the people in the cave. Only half of the arm and the gun were left outside. The monster was not interested.

"Is this a building from the human race in the past?" Xia Chao made a bold guess after pondering for a moment.

Xia Chao and Qiushi are both good students who listen well in class. They don't lose focus in class, take notes carefully, and come out on top in every exam.

They learned history very well.

Xia Chao and Qiushi knew that the recorded and verified history of the Lingxi world lasted for two thousand years. Before that, there were no documents, only vague, confusing and contradictory legends.

For example, there are legends about people who controlled beasts and became immortals. There are also legends that the earliest human race could also practice cultivation. There are also legends that the history of the human race extends far beyond two thousand years. The technological level of the human race two thousand years ago was far more advanced than it is now.

I don’t know whether it is true or not to control beasts and become immortals, but the immortal world does exist. The first human race did not know whether they could practice it, but now Xia Chao can indeed practice it. The appearance of Jiang Li makes these mythical legends more convincing.

Xia Chao suspected that the last legend was also true.

Humanity has more than two thousand years of history, and there was a more glorious past before that.

"In the past? But now it is Lingxi calendar two thousand years, and the writing on the door is Lingxi calendar four thousand two hundred years." Qiushi was puzzled.

"Then where does our Lingxi Calendar, which dates back two thousand years, come from?"

Xia Chao asked Qiushi, yes, he kept talking about how many years Lingxi has been in, and how many years Lingxi has been in.

But why is it called Lingxi Li? It can't just be made up casually, there should be a reason.

Is it a certain sentence, a certain story, or... before the first year of the Lingxi calendar, there was an era that was marked by the Lingxi calendar?

The original Lingxi era was destroyed, and those who survived inherited the original name and started anew.

The more Qiushi thought about it, the more it seemed possible.

"This was built by your ancestors." Jiang Li answered in the affirmative.

Xia Chao and Qiushi felt that it was inconsistent to use the word ancestor.

Speaking of their ancestors, the two of them thought of the ancients who wore coarse cloth and lived in the farming era.

But looking at the technological content of the air-raid shelters, I'm afraid they are ancients.

The technological level of our ancestors was much better than theirs.

Walking further inside, you can see some relatively complete bones. The bones are hard and jade-like, and they have not changed for more than two thousand years.

Xia Chao always felt that the bones looked familiar, and then he suddenly realized.

"My bones are similar to that of this ancestor." Xia Chao remembered that during his three-month training with the devil, he was often penetrated by the spirit sword. When he pulled out the spirit sword, he could not help but see the bones.

My own bones also have a somewhat jade texture.

"Your ancestor?" Bone Wing White Tiger interrupted, showing his presence.

"My bones were a normal color before I started practicing." Xia Chao emphasized.

"He is not the ancestor of Xia Chao. The changes in Xia Chao's bones were caused by practicing the "Evergreen Kung Fu". This man was also a monk during his lifetime. He should have practiced a technique similar to the "Evergreen Kung Fu", and his realm was higher than yours. It should be the Nascent Soul stage.”

Qiushi's eyes widened and she was a little shocked. It turned out that the legend was true. In the past, the human race was not an auxiliary leveling tool for contract beasts and could be cultivated.

"You can fire a shot to see the power." Jiang Li picked up a gun from the ground.

After two thousand years, the gun became fragile, and many parts became unusable after years of baptism. Jiang Li strengthened and repaired it.

Xia Chao pulled the trigger and nothing happened.

"Misfire?"

Jiang Li smiled and said: "Pull the trigger and inject spiritual energy at the same time."

Xia Chao did as he was told, and with a loud bang, the aura condensed into bullets and fired, which was more powerful than any gun Xia Chao had ever seen.

Bai Xueling also picked up a gun with great interest. After studying it, she commented: "The design is very innovative, and it is indeed for monks. Unfortunately, the power is not satisfactory. It is better to use the Lingbao directly."

Xia Chao also discovered that the power of the gun was indeed more powerful than the gun powered by gunpowder, but that was it. After practicing the "Dragon, Tiger and Arhat Strength", the punch he made was stronger than the spiritual energy bullet.

However, this also shows that the original world of Lingxi was a world of monks who tried to combine spiritual energy with technology. However, unknown changes occurred later. The history was lost, the cultivation methods were lost, technology regressed, and things that happened two thousand years ago were erased. Everything is removed and everything starts from scratch.

Finally they came to a wall with a long mural and messy text annotations.

The wall is hard, and those who can leave traces on it are at least monks in the late stages of becoming gods.

"This is the history of the Lingxi world, the history of the Lingxi era of 4,200 years."