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

In the past countless years, the Six Immortal Domains and the boundless starry skies they covered had only produced seven experts above the Ninth Dao Realm. Now, another one had actually appeared out of thin air.

"It should be an expert from the outer realm invited by Daoist Su." Li Jiu picked up the large gourd on his back and took a sip of wine. He said to Lanzhi, "Looks like Daoist Su is going to do something big this time."

"You're saying that this is a helper he found from the outer realm and wants this person to support him at the banquet?" Lanzhi said in surprise. "In that case, it must be a huge plan."

"That's right. I wonder what topic he wants to raise." Li Jiu nodded gently and suddenly said, "Daoist Su had even sent his Dao Child over to look for that person."

At this moment, they were not the only ones paying attention to Cui Heng and Daoist Su. Everyone's attention was focused here.

Daoist Su's Request, Lord of the Six Domains (2)