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 establishment of the Martial Dao Academy was not a good thing for the "nobles" of the nine countries of the Immortal Land.

These so-called nobles might not be high-ranking rulers.

As their legacies had been passed down for too long, and more and more descendants had reproduced, with most of them having ordinary aptitudes, there were many "nobles" with ordinary statuses and power in many places.

These people usually occupied the positions of some minor officials. They could not be said to have any power, but in the end, they were "nobles" who could cultivate high-level martial arts. They still felt very superior to ordinary people.

Therefore, after the Central Capital Imperial City established the Martial Dao Academy and wanted to spread the cultivation of high-level martial arts to the world, the first to jump was not those with high statuses.

On the other hand, the "nobles" who were minor officials could not sit still anymore.

Beginning, Nine Nether Divine Lord