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

When Wang Dongyang saw the fire dragon flying towards him, he subconsciously wanted to dodge.

Although this fire dragon was not huge, the aura emitted from it was extremely terrifying, far exceeding the limits of what he could withstand.

This made Wang Dongyang feel that as long as he came into contact with this fire dragon, he would immediately be reduced to ashes.

However, it was too late to refuse now.

As soon as Cui Heng finished speaking, the fire dragon flew onto Wang Dongyang's body and landed on his shoulder, but it did not burn anything.

Nor did it burn Wang Dongyang to ashes.

The little fire dragon even twisted its body on Wang Dongyang's shoulder. It raised a front claw and scratched the fiery red scales on its body before opening its mouth to yawn.

A Plate of Loose Sand