Immortal cultivation starts with copying.

The formation of the Cold Wind Valley stronghold was shaking under the attack of the demons, and it felt like it would break at the next moment.

In fact, the city's protective formation, although seemingly fragile, is very resilient and will not break easily unless it reaches a critical point.

In particular, there was a fourth-level demon who was extremely tall and had only one vertical eye on his forehead.

This demon held a thick stick in his hand, and he would jump high and smash down hard every time.

Each blow caused the light on the city defense formation to flicker rapidly and become shaky.

The late Nascent Soul cultivator who had greeted Chen Yunhao before was named Liu Shiyuan, one of the elders of the Yu Shui Ling Sect, the second largest sect in the Beiyuan Continent.

Although Liu Shiyuan was an elder of a sect, he took the initiative to apply to the Zhongyuan Continent in order to break through to the God Transformation Realm.

Seeing that the fourth-level demon outside the city was very rampant, Liu Shiyuan flashed through the formation and raised his hand to shoot out a sharp sword light.

The tall fourth-level demon roared, touched the ground with his toes, and leaped more than ten feet into the air. Holding the club in both hands, he smashed down with the force of a mountain.

Liu Shiyuan flicked his right hand repeatedly, and four or five talismans shot out.

The talisman turned into a sky full of ice arrows, so cold that it seemed to be able to condense the air.

The fourth-level demon who was already in the air was unable to change direction at this time. He could only rotate the iron rod in his hand like a wind fire wheel to protect his body.

There was only a series of clanging sounds, and the ice arrows turned into fragments and fell down.

But it also caused the fifth-level demon to fall from the air, and Liu Shiyuan threw the flying sword in his hand, which turned into a water dragon of more than ten feet long and roared away.

Liu Shiyuan has water spiritual roots and is good at magic. He is good at defense but not good at offense.

This was Chen Yunhao's evaluation of him. As soon as Liu Shiyuan made a move, Chen Yunhao knew that it would not be easy for him to defeat this fourth-level demon.

But Chen Yunhao could only watch them fight. Unless the fifth-level demon in the distance took action, he couldn't take action either.

One man and one demon fought for an incense stick of time, and neither could do anything to the other.

But it was obvious that Liu Shiyuan was a little anxious. He gritted his teeth and took out a bead the size of a fist.

The beads are light blue, like water droplets, and you can see traces of flowing water on them.

Liu Shiyuan threw the bead to the demon, pinched two spells with his hands, and quickly retreated back into the formation.

boom……

With a loud bang, like thunder, the bead exploded in the air, like a huge wave hitting the shore, with an astonishing momentum.

The fourth-level demon was blown back dozens of feet, spitting blood from his mouth and nose, and the iron rod had already flown away to who knows where.

This bead has a very wide coverage area, and all demons within a radius of twenty feet are not spared.

Especially the low-level demons, they were blown to pieces.

Chen Yunhao took a quick glance and thought about it briefly before he remembered what it was.

This should be the more famous Kuishui Golden Thunder of the Yu Shui Ling Sect. It is made by combining the energy of sunflower water and refined gold into one, and using refining techniques. It can be regarded as a disposable magic weapon.

This thing is a life-saving essential for the Yu Shui Ling Sect monks, and it is quite powerful.

But this thing is not easy to make, and the spiritual materials are hard to find, so the quantity will definitely not be too large.

After the fourth-level demon fell to the ground, he struggled to stand up and was dragged away by several other demons.

The loud noise paused the demons' attack for a moment, causing a little chaos.

But then a strange cry was heard, and these demons began to rush forward fearlessly again, launching a fierce attack on the city defense formation.

This attack has been going on for three or four hours, and the demons outside the city have left nearly two thousand corpses.

But even so, the number of demons still exceeds that of humans.

Chen Yunhao stood silently in the air. He was also in a hurry to get the position, and the formation plate of the stronghold's city defense formation was not in his hand yet.

But from his perspective as a formation master, if the attack continued at this intensity, the formation would collapse in three hours at most.

If the demons cannot conquer the city within this hour, they can just retreat.

If the attack is still powerful, he will have to take action. He can't just watch thousands of human cultivators below being slaughtered by the demons!

Time passed little by little, and every moment some demons fell down, and some monks behind the formation collapsed on the ground due to exhaustion, but it was better than losing their lives.

Even though two or three thousand demons died, the momentum of the demon attack remained unabated.

Seeing that the spiritual energy above the formation was about to collapse, Chen Yunhao waved his hand in the air, and 108 formation flags flew out into the sky.

This is the Tiangang Disha Formation that Chen Yunhao has not used for a long time. This formation is also level three, and is comparable to the city defense formation.

The Tiangang and Disha formations had just been set up along the city wall when a clear sound was heard from the city defense formation, and the invisible barrier shattered like a bubble.

At this time, a strange cry came from the demon clan. The demon clan who were just fighting recklessly stopped what they were doing and retreated one after another.

But when they were leaving, one of them grabbed a corpse and took it away.

It’s not that the demons want to devour each other, but the Blood Demon Lord behind them needs these corpses.

Watching the demons slowly retreat, the monks on the stronghold walls shouted excitedly.

Most of the monks simply collapsed on the ground, too tired to move a finger.

Many monks hurriedly swallowed the elixir to keep their physical strength and magic power sufficient at all times on the front battlefield.

Chen Yunhao glanced down and shot forward quickly. He wanted to see the end of the valley, which was the other side of the mountain range.

After a cup of tea, Chen Yunhao saw that the demon had retreated from the valley.

The other side of the mountain has changed a lot. It has become the world of demons.

The air was filled with a faint demonic aura, which caused all kinds of plants on the land to wither and die, creating a desolate scene.

The fifth-level demon was floating in the air in the distance. He did not go far and kept staring at Chen Yunhao.

Chen Yunhao grinned at him and hooked his finger.

He didn't mind seeing the demon's methods now, but unfortunately the fifth-level demon was patient and didn't move.

Then Chen Yunhao turned around and returned to the Cold Wind Valley stronghold. He wanted to master the operation of the city defense formation as soon as possible.

When Chen Yunhao came back, the original city defense formation started to work again.

Liu Shiyuan came to meet him from afar.

"Senior, the formation plate of the city defense formation is broken. I have activated the backup formation plate."

Liu Shiyuan said as he handed over a formation plate with both hands.

"Have the defenders take turns resting and not slacking off. I think the demons will attack again soon."

Chen Yunhao took the formation plate, took a look at it and said.

"Don't worry, Senior Chen, I've already made the arrangements."

"By the way, how about exchanging your Sunflower Water Golden Thunder for one of mine?"

"This... I don't have much of this Sunflower Water Golden Thunder left, Senior."

Liu Shiyuan declined politely.