I exchanged sects with the real daughter, and I ascended to heaven to offer sacrifices to her

Yu Qingning was shocked. She had previously felt that something seemed to be trying to break free from the Ten Thousand Demons Flag. It was this breath.

It is also the ancient demon soul recorded in the ancient book about the Ten Thousand Demons Flag.

The moment the ancient demon soul completely emerged from the Ten Thousand Demons Flag, the entire world changed color.

Dark clouds gathered quickly, covering the sky tightly. The sounds of lightning and thunder were endless. A strong wind whistled, sweeping up sand and rocks all over the sky and raging in all directions.

Even the strong men on the battlefield were shocked by the sudden terrifying aura.

After all, it is the ancient demon soul sealed in the Ten Thousand Demons Flag. Its power is enough to shake the heaven and earth. If it were not in the big formation, its power would be even more terrifying.

Outside the small back mountain, some inner disciples who came to observe the situation all felt a powerful demonic aura even though they were separated by a large formation.

I couldn't help but feel frightened and subconsciously stepped back.

Some disciples who wanted to sneak into the small back mountain immediately gave up the idea.

At this moment, they also fully realized that this force was not something they could contend with. Any rash action could lead to a catastrophic disaster. Curiosity really did kill the cat.

Within the formation.

The appearance of the ancient demon soul made the huge number of demon beast shadows as if they were injected with chicken blood, and they pounced on everyone again.

The Great Elder swung the whisk in his hand, and a powerful wave of spiritual energy spread out, shattering all the phantoms of the surrounding monsters.

The moment the ancient demon soul appeared, it rushed towards Yu Jun head-on. Its power seemed to crush everything that stood in its way into powder.

Yu Jun held his natal sword in his hand, and the sword energy and the phantom met in the air, erupting with a deafening roar. Every attack of the ancient demon soul carried destructive power.

Shen Xuanli and several other strong men also joined the battle at the first moment.

A cold light flashed, and when Shen Xuanli's natal sword came out, the air around him became several degrees colder, and he fought fiercely with the ancient demon spirit.

However, as the ancient demon soul was summoned, the Demon King's momentum soared.

However, due to the suppression of the formation, no matter how strong it was, its strength could not reach its peak state. However, compared with before, the demonic energy around it was obviously much stronger.

So he took advantage of his increased strength and launched an offensive against a group of powerful men.

Pei Yin and the elders had anticipated this situation when they were setting up the Four Seasons Heavenly Gang Demon Formation.

Therefore, when setting up the formation, every detail of the formation was carefully designed to ensure that the formation could remain stable even when the demonic energy was at its strongest.

Pei Yin, Tianjizi and several other elders looked at each other, and they all formed seals with their hands, guiding the power of heaven and earth to merge with the formation.

As the elders formed seals, the light of the Four Seasons Heavenly Gang Demon Formation became more and more dazzling, and vast forces of heaven and earth were injected into the formation, making the power of the formation even greater.

Probably feeling the threat of the demon-slaying formation, the ancient demon spirit roared, shaking the sky. Its sound waves turned into actual shock waves, spreading in all directions, trying to break through the formation.

However, the Four Seasons Heavenly Gang Demon Formation was like an indestructible fortress, firmly blocking the shock wave.

The light of the formation and the power of the Demon King's demon soul competed with each other, forming a picture of a confrontation between light and darkness.

Pei Yin and Tianjizi continued to guide the operation of the formation and continuously transported spiritual power into the formation.

The light of the formation became brighter and brighter, almost piercing the sky, and the power of the formation reached an unprecedented level.

The sword formation was triggered again, and the sword energy was like rain, dense and sharp. Each sword contained the power of heaven and earth, flying down from the sky and pointing directly at the Demon King.

Although the Demon King was able to increase his strength with the help of the power of the ancient demon soul, he had to temporarily hide from the attack at this time.

He immediately transformed into a black shadow and shuttled through the formation.

While dodging the rain of sword attacks, he also took the opportunity to look for the weak points of the formation, hoping to find a chance to break through the constraints of the formation.

However, Pei Yin and the elders had already taken precautions and set up countless traps and confusions in the formation in advance, which hindered the Demon King's actions at every turn and even cut his body with several wounds from the sword energy.

Moreover, the light of the formation became more and more dazzling, and the rain of swords became more and more dense, almost reaching the point of being everywhere.

Tianjizi was muttering something, and while countless runes were flying in the air, he also sacrificed his natal seal.

The talisman shone brightly, reflecting the light of the formation. It rotated in the air and gradually expanded, eventually forming a huge curtain of light, completely blocking the Demon King's retreat.

Seeing this, Pei Yin immediately directed the sword energy in the formation to concentrate the attack. Sword rain poured down like a waterfall, forming an insurmountable sword energy barrier.

The Demon King rushed left and right in the rain of swords, but he was still unable to break through the cage made of sword energy.

"Damn it!" The Demon King roared, and the demonic energy in his body surged again. He tried to break through the blockade of the sword rain with brute force.

However, Pei Yin and the elders had already exerted the power of the formation to its fullest extent, and every attack of the Demon King was ruthlessly repelled by the sword energy.

Upon seeing this, Yu Qingning thought that it was worthy of being called the Four Seasons Heavenly Gang Demon-Slaying Formation. Even if the opponent was the Demon King, as long as he was in the formation, he would be suppressed.

Soon after, not only did the Demon King's offensive gradually weaken, but the power of the ancient demon soul also began to wane.

Seeing that even with the Ten Thousand Demons Flag in hand, he could not gain the upper hand, the Demon King hated the formation that suppressed him.

There was a cunning glint in his eyes, and he actually focused his attention on Yu Qingning.

In the eyes of the Demon King, no matter whether it is Pei Yin, Yu Jun, Tianjizi or Lingguang Patriarch, these people are not easy to deal with when he is unable to exert his peak strength.

Since he is difficult to deal with, he will find someone who is easier to deal with.

Because of Ye Hanyue's relationship, the Demon King also knew Yu Qingning's identity, and immediately decided to use Yu Qingning as a threat to reverse the situation.

When Yu Qingning saw the Demon King's gaze turned towards him, his brows furrowed.

There were masters and a group of strong men there. Whether it was her, or Feng Wuyang, Xiao Chong and Jiang Wan who arrived later, they all came to watch the battle and learn.

After all, there are so many big guys here, and as juniors, they naturally won't rush up to deal with the Demon King and cause trouble for the big guys.

So, among them, the Demon King thought she was easy to bully, right? Her delicate beauty had become a weakness in the Demon King's eyes.

Guessing that he had become a weakness in the eyes of the Demon King, Yu Qingning was not panicked.

Her cultivation level is not as high as that of the big guys present, but she is not a lamb to be slaughtered.

The spiritual power in her body was circulating and rising continuously. She had quietly pushed the fourth level of the Extreme Fire Thunder Art to its limit.

In the palms of his hands, lightning and flames intertwined, ready to launch a fatal attack at any time.