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

If I can step into the Half-step Return to Void Realm, I needn't be so passive when facing that mysterious consciousness. "Now, I already have the son of the Human Monarch, Prince Lie, who has transformed into an Origin Treasure, and an artifact, the Nine-layered Divine Light Pagoda, that contains a large amount of the power of the Origin Great Dao. I can use them to buy the 'Advanced Omnipotent Package Purchase Voucher'."

Cui Heng thought to himself, "Then the problem is, which one should I use to buy it? From the practicality of the treasure, the Nine-layered Divine Light Pagoda is a complete Ancient King Supreme Treasure, but Prince Lie can only be considered a spiritual material…"

Thinking of this, he stared at the purchase interface that appeared in front of him and fell into deep thought.

Unprecedented Sense of Danger, Upgraded Advanced Immortal Cultivation Package (2)