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

"Master, is the Purple Sun Realm really so powerful?" Li Mingqiong could not help but ask.

Pei Qingshu and Li Wei also looked at Cui Heng, wanting to seek an answer to this question.

Cui Heng's guess just now was too terrifying, and he had described the Purple Sun Realm as too powerful. It was unbelievable.

"It's just some guesses." Cui Heng shook his head gently and smiled. "I've never been to the Purple Sun Realm, nor have I seen any books about it. Naturally, it's impossible to know the exact situation.

"However, it's not wrong to be cautious. Now that the Purple Sun Realm has yet to reveal themselves, the outside world has very little understanding of them. We should still be careful lest we suffer a huge loss because of carelessness."

"Yes, Master," Li Mingqiong and Pei Qingshu replied in unison. They felt much more at ease, but they still maintained their vigilance towards the Purple Sun Realm.

Preparations Before Departure, New Spells!