Wei Chengyuan's words left many people at a loss, but some people, such as Wei Jianxing and Qiu Shu, showed expressions of shock.

Tiangang formation, that only exists in legends, belongs to the formation hundreds of millions of years ago.

No matter how you look at it, the young man in front of him is only in his twenties, yet he was able to set up a Tiangang formation, which is too unimaginable.

However, these people didn't know how shocked Wei Chengyuan was.

Because many people don't know about the Tiangang formation, they only know that the formation is powerful and ancient, but few people know that the most difficult part of the Tiangang formation is not the formation, but the process of finally activating the formation with the talisman seal.

That process was extremely dangerous, as long as there was a slight omission in the use of spiritual power and the drawing of the talisman, the disk would collapse and a terrifying explosion would occur, stretching for thousands of miles.

But when the person in front of him arranged the Tiangang formation, he seemed to be at his fingertips, without any tension or blockage at all.

This person... who is it?

Xue Sha in the void also saw the strange runes appearing above Bijingxuan, and was also surprised.

He recognized all of Venerable Huiyue's subordinates, but he had never seen this unremarkable young man who suddenly appeared.

Moreover, Xue Fiend looked intently and found that this person's strength was no more than the peak of the Nascent Soul Stage, but he always found it strange that the young man seemed to be shrouded in clouds and mist, which made it hard for him to see clearly.

It was also this person who made the move just now, and he managed to stabilize the enchantment that was about to be broken by himself.

Xue Sha looked down at Nangong Yu coldly, and said in a deep voice, "Boy, who are you? Who told you to meddle in your own business?"

Nangong Yu was busy strengthening the Tiangang Formation, and he didn't even bother to look him straight when he heard that the bird didn't even have a bird's blood.

Xue Sha was smoked in the air by his angry seven orifices, his eyes were about to spew fire, and he glared at Nangong Yu fiercely: "You are looking for death! How dare you be so arrogant in a mere Nascent Soul stage. I will crush you immediately, look at you How can you be so arrogant for a while!"

As he said that, the sword in his hand, which was originally only two feet long, suddenly became bigger and longer. It turned out to be a giant sword tens of feet long.

The giant sword floated in the air, emitting a sinister bloody light.

Xuesha clasped his hands together, forming a talisman, and then, a huge ball of fire suddenly shot out from between the talismans and enveloped the blade of the giant sword.

Xue Sha commanded the huge sword, pointed in the direction of Bi Jingxuan's protective shield, and shouted sharply: "Break it!"

In an instant, the sound of howling piercing through the sky resounded, and a huge and narrow flame rushed straight down towards Bi Jingxuan.

It seemed that Bi Jingxuan would be swallowed up in the next moment.

Even though Wei Chengyuan, Wei Jianxing and others were full of confidence in the Tiangang Formation just now, they still felt a little frightened at the sight of the overwhelming fire that swept across the sky.

That is [Endless Black Fire], a flame that can burn everything in the world, even the spiritual power of the protective shield will be eaten away by him little by little.

With this [Endless Black Flame], the former Lord of the Night burned the souls of many people and made many people frightened.Unexpectedly, today he actually gave [Endless Black Flame] to his subordinate Xue Sha.

Can the Tiangang Formation really block this [Endless Black Fire]?

===

In the operating room, when the vibration stopped, everything became calm, peaceful and orderly again.

While Hexi used his spiritual sense to detect the lesion in the middle-aged man's brain, he slowly cut off the lesion and washed it with diluted spiritual spring water.