Chapter 1317

After the lingering sound of the snort spread, it turned into strands of pervasive demonic sound, almost capable of stirring the heart and mind of any master in the world, like a most intimate friend discussing the secrets hidden deep within one's heart.

Under this soul-hooking and spirit-stealing beautiful sound, almost no one could keep their heart and mind from being lost.

This was the Heavenly Demon Sound!

The Heavenly Demon Great Art of the Yin Gui Sect was the most essential part of the "Heavenly Demon Strategy," with "illusion and change" as its main focus. Its various methods could be called strange, and only by collecting all ten volumes of the "Heavenly Demon Strategy" could one advance to the extreme of the demonic path and practice the most strange and powerful Dao Heart Planting Demon Great Art.

Unifying the Demonic gate and collecting all ten volumes of the "Heavenly Demon Strategy" was also Zhu Yuyan's lifelong pursuit.

Originally, for Zhu Yuyan, the Yin Gui Sect had mastered the most essential part of the "Heavenly Demon Strategy," and if she could cultivate the Heavenly Demon Great Art to the extreme, there was no need to pursue the Dao Heart Planting Demon Great Art. After all, whether this method could be successfully practiced was still unknown, and even Xiang Yutian was suspected to have died from qi deviation while practicing this method.

But for Zhu Yuyan, there was no choice.

To practice the eighteenth level of the Heavenly Demon Great Art, one must have a pure yin body.

She was gifted back then and had cultivated to the seventeenth level at a young age, but because she was deceived by Shi Zhixuan, she lost her virginity and never had the chance to ascend to the eighteenth level of the Heavenly Demon Great Art in this life.

It was also because of this reason that her master was angered to death.

Only after her master died did Zhu Yuyan realize what she had lost.

She had lost the possibility of ascending to a higher realm.

Consequently, to fulfill her master's last wish and to avenge her master.

She vowed to unify the Demonic gate and kill Shi Zhixuan.

In Zhu Yuyan's expectation, this woman would fall for her demonic sound, and then, under the guidance of her demonic sound, launch an attack on Shi Zhixuan beside her, eventually being killed on the spot by the enraged Shi Zhixuan.

However, to her surprise.

Her Heavenly Demon Sound did not affect Yanfei's heart and mind.

Facing the influence of the Heavenly Demon Sound, Yanfei turned a blind eye and praised softly, "Your attainments in illusion are not bad, but unfortunately, illusion is ultimately just illusion. I only need to stabilize my heart and mind, and it is destined to have no effect on me."

There was one thing Yanfei did not say.

Within the Yin-Yang School, there was a supreme treasure called the Illusion Sound Treasure Box.

The Illusion Sound Treasure Box was the key to breaking the Seven Luminaries of the Azure Dragon; besides this, it was also a supreme treasure of the Yin-Yang School, which could help people of the Yin-Yang School improve their temperament and cultivation, subsequently causing their power to advance greatly.

After the secret of the Seven Luminaries of the Azure Dragon was broken, this object lost one of its functions.

Afterward, it was left in the Yin-Yang School by Su Xuan, and whenever Yanfei had nothing to do, she would go to listen to the illusion sounds released by the Illusion Sound Treasure Box.

Under the baptism of thousands of demonic sounds, she had long since ignored mere illusion sounds.

Hearing Yanfei's words, Zhu Yuyan's heart tightened, and she also knew that the other party's strength was not ordinary and that her Heavenly Demon Sound could not affect this person. In the next instant, Zhu Yuyan no longer used the Heavenly Demon Sound to interfere with Yanfei, but chose to take decisive action.

Her feet did not touch the dust, and she rode the night wind, her figure drifting away. As her sleeves flew, two water-cloud long sleeves broke through the air, sweeping away the mist in the night, rolling up layers of ripples, and even more, an invisible and intangible Heavenly Demon Force Field merged into them, covering all the vital points of Yanfei's body like mercury pouring onto the ground.

This strike could not be called anything but powerful.

Even without ascending to the eighteenth level of the Heavenly Demon Great Art, the power of the seventeenth level peak was enough to make Zhu Yuyan look down upon the entire Demonic gate.

Even facing Shi Zhixuan, whose power had not yet recovered, Zhu Yuyan still had the strength to fight.

This was also the capital she relied on to be confident that she could kill Shi Zhixuan.

Unfortunately, her opponent was Yanfei.

The Shi Zhixuan of that day, when facing Yanfei, had still been defeated by Yanfei in a few moves.

When Zhu Yuyan's confident offensive reached Yanfei, she only felt a brilliant sun emerge, the scorching sun rising, dispelling the cold air in the night, forcing away the moonlight, and sweeping away the night.

The long sleeves Zhu Yuyan manipulated shattered inch by inch, and afterward, she discovered that her Heavenly Demon Force Field was also broken by an even more powerful force.

Golden light appeared suddenly.