Sole Cloud Flying Cave

Cui Heng was transmigrated to another world and the system told him that the new world he was in was a high-grade Xianxia world.
It was a world where Celestial Kings soared the sky and terrifying monsters ruled the lands. The strong would destroy a planet if their mood was bad and Cui Heng trembled in fear when he learned of how scary the new world was.
Thankfully, the system had granted him the protection that last for 300 years. As long as he remained in the safety zone, he would not receive any damage.
With his safety secured, he began his cultivation training for the next 300 years.
Throughout the years as he trained, some people entered his safety zone by mistake.
There was a peasant who was once a monk and a beggar. Despite that, he still had the dream of bringing peace to the land and saving the lives of millions.
There was a noble who was once called the once-in-a-million-year genius. Yet, luck wasn't at his side and his talent fell and was laughed at by others for years.
There was a princess whose only wish was to find her older brother. She could've become a celestial but decided to remain in the human realm to wait for her brother's return.
There was a weak lady who was plagued with illness from birth but had the goal of adventuring and helping the poor and weak.
...
Cui Heng befriended these people and even gave them a few pointers before they left.
300 years later, when the protection period had ended, he had finally mastered the Golden Core. Even then, he was still reluctant to go to the outside world.
But when he did, he realized that the world was merely a world of Wuxia.

Realizing This Is A Wuxia World After Cultivating For 300 Years

The Heavenly Saint Supreme Venerate was unwilling to attack directly, nor was he willing to send anyone to help.

This way, the problem in front of Ye Yun was extremely troublesome. He had no way of leaving this cave abode.

This was because as soon as he left, he would immediately face Huo Si's attack.

With his strength as a Taiyi Mystic Deity, it was impossible for him to be a match for it.

He would only be crushed in all aspects.

Although he would not die, it did not feel good to be killed again and again.

"Why is this Outer World Evil Demon so powerful? What exactly is his background?!" Ye Yun fell into deep thought, unable to figure it out no matter what.

The Lower World was just a civilization that had not even reached 10,000 years old. It was already a miracle for one Half-step Golden Immortal to appear. How could there be a second one?

The second one might even be a genuine Golden Immortal Supreme.

3,000 Years Ago, Devouring Star Gods