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

However, the nature of their power was slightly different. The former grasped a portion of the power left behind by the Supreme God of Heaven and a portion of the Supreme God of Earth, while the latter grasped a large amount of the power left behind by the Supreme God of Heaven, but the strength of the two was the same. "It's time, attack!" A Heaven Earth Saint Realm expert shouted. "Immortal Ancestor Zongmu has already occupied the past timeline that contained the existence of this person and even drawn the power of the Primordial World in the past space-time. It'll be too late if we don't attack now!"

Everyone nodded and prepared to join forces to stop Immortal Ancestor Zongmu's attack on Cui Heng.

The reason why they had to join forces was because they knew that as long as they attacked, the other five Immortal Ancestors of the Primordial World would not sit back and do nothing.

Go Back 10,000 Years From Now, There Will Be No Traces of You! (2)