After Shen Lang observed for a while, he found something was wrong.

This "Twelve Yuanchen Formation" seems to be just a similar shape, not an orthodox, like a simplified version of the formation.

Even the simplified twelve Yuanchen Formation can exert horrific defense.

The external demonic army continued to attack for several hours, but still did not shake the formation.

"Old Demon of Flame, don't waste your energy, hurry up and go home!"

"Just because you, the mobs, want to break the formation, it's really a daydream!"

"The Old Demon of Chi Yan, even if you, Ancestor Chi You, come, may not be able to break this formation!"

The three old monsters guarding the Black Crystal Mountains spoke sarcastically.

The flame demon general's face was extremely gloomy.

This is the ninth time he has led his army to attack the Heijing Mountains, and he has failed to succeed every time.

The defensive formation at the Black Crystal Mountain stronghold was designed by the god-girl Nuwa and was indestructible. The flame demon general had no choice but to attack frequently and tried to find out the weaknesses of the formation.

However, after leading the army to attack so many times, the Flame Demon General found that this formation had no weaknesses.

This simplified version of the twelve Yuanchen Array in the Black Crystal Mountains can not only withstand the attacks of the demon army, but also resist the attacks of the magical powers of the demon Lord!

To break this formation with external force, several demon lords need to work together to attack for several hours before they can be broken.

Although the power of the Demon Realm is powerful, it is not as powerful as being as exaggerated as it can be used to randomly dispatch a few demon lords to attack a small stronghold.

In fact, there are thousands of simplified versions of the twelve Yuanchen Array in the entire True Immortal World!

To this day, the number of formations is still increasing.

The simplified version of the twelve Yuanchen Array of the Black Crystal Mountains was built several years ago. Since then, the Black Crystal Mountains have almost become like iron walls, and the demons cannot capture them for a long time.

The creator of the Twelve Yuanchen Formation was Fuxi, who promoted this formation to various parts of the fairy world and gave a simplified version of the formation layout plan.

The major forces in the Immortal World resisted the Demon Clan relied on the large number of simplified versions of the 12 Yuan Chen formation to withstand the attack of the Demon Clan army for tens of thousands of years.

The territory of the demon army has not expanded and extended for thousands of years. In addition, most of the resource resources in the fairy world are controlled by the three major tribes and the Goddess Palace, so the demon army that has been fighting for many years is difficult to be self-sufficient.

The flame demon general was ordered to die by his superiors. This time, he would conquer the Black Crystal Mountains and seize the mineral resources here.

"Don't think that you, the group of waste, can rest assured if you hide in the formation. The Great Demon Lord of Chiyou of our clan has developed a formation-breaking object against this twelve Yuanchen Formation. I'll take you to take action this time!"

The flame demon general felt that the time was almost done.

It is difficult to weaken the defense of the formation if you continue to attack. You can try the thing given by the Great Demon Lord.

As soon as the roar fell, the flame demon will take out a black glowing pearl, which will burst out with a breathtaking magic light.

“That’s…”

Shen Lang, who was among the stronghold army, suddenly felt a palpitation when he saw this moment.

He could feel that the orb taken out by the Flaming Demon General released energy fluctuations similar to the magic core!

Instinct tells him that this thing is very dangerous!

In the midst of lightning, the flame demon general poured all his strength into the orb and shouted loudly: "Holy demon bead, break this formation for me!"

"Boom!!!"

At this moment, the sky shook and the earth shook, and the universe fissioned.

The black bead that fell from the sky suddenly turned into a huge and strange black light ball, carrying a terrifying power of destruction and pressing towards the formation barrier below!

"Dong!!!"

The black light ball hit the twelve Yuanchen Formation covering the Black Crystal Mountains, and the violent roar was deafening.

The black light ball hit the formation barrier and exploded directly. Everything around was covered by black light, and the terrifying energy spread outward, and the power instantly reached a terrifying level!

All areas outside the defense range of the twelve Yuanchen Formation have turned into a desolate and tail heart.

The moon of the mountain was covered with black light in an instant, and the entire Black Crystal Mountains were suddenly shrouded in black light, and they could not see their five fingers.

This twelve Yuanchen Array that guards the Black Crystal Mountains is under unimaginable energy impact.

The mountain trembled violently, like a magnitude 12 earthquake, and the rocky grounds everywhere began to crack.

Shen Lang couldn't hide his shock.

In fact, as early as the moment the black light ball exploded, his Shura Holy Pupil had already peeked at the light ball that seemed to have a magic core.

It was the magic core that self-destructed created such a horrifying attack.

"Dongdongdongdongdong!!!"

The destructive explosion made the heart stagnate, and the space inside the Black Crystal Mountains was twisting and shaking!

The three old demons guarding the stronghold could not hide their horror on their faces. They never expected that this flaming demon general would have a way to break the formation!

The violent explosion lasted for dozens of breaths.

A thrilling scene appeared.

"Click!"

They considered it to be the indestructible twelve Yuanchen Formation, a tiny crack broke out at the barrier of the formation!

It was this tiny crack that allowed the magic light to penetrate through the crack, turning into an extremely violent storm of destruction, roaring towards the stronghold army!

"not good!"

The three old demons changed their faces drastically, and they immediately used their magical powers to offset the coming magic light storm.

Seeing that the defensive formation that had always been unfavorable was broken, countless monks in the stronghold were immediately panicked.

After one blow, the twelve Yuanchen Array in the Black Crystal Mountains had already cracked a clear crack.

Although the formation was not directly broken, it also greatly reduced the defense of the formation.

"The demon army obeys the order, and the opponent's defensive formation is on the verge of collapse. Give me all my strength to break through this formation!"

The flame demon general gave the order, and the demon army attacked the formation below with all their strength.

Finally, I opened the breakthrough with the Holy Demon Pearl. The Flame Demon General doesn’t want to miss this excellent opportunity!

"Dongdongdongdongdongdong!"

The deafening sound of the bombing of magical powers sounded again.

This time, the three old monsters guarding the stronghold finally couldn't sit still.

"Don't panic. This mountain protection array uses countless spiritual ores in the Black Crystal Mountains as charge. It has powerful recovery ability. We just need to withstand several waves of attacks in the place, and the formation will recover by itself!"

"The whole army obeys the orders and quickly displays magical powers to counterattack!"

The three old monsters immediately commanded the army to fight back.

Countless attacks soared into the sky from the inside of the formation, confronting the demon army outside.

Unfortunately, the defenders in the Black Crystal Mountains were slightly inferior in strength and were once again suppressed by the demon army.

More and more attacks fell on the formation, and more cracks on the surface of the formation were increasing, and the repair speed was far less than the speed of being destroyed.

Seeing that the formation was about to collapse, the mentality of the three old demons also collapsed.

Since the 12 Yuan Chen Formation, the number of troops garrisons in the Black Crystal Mountains has decreased. At present, this group of defenders will definitely not be able to stop the demon army led by the Flaming Demon General.

At this critical moment.

A bloody figure suddenly flew out from the defenders of the stronghold and rushed out of the formation with lightning speed!
Chapter completed!