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

Cui Heng's idea of sealing gods was not just a spur of the moment idea.

Previously, among the ten spells he had obtained through deduction, there was a "Emperor's Order Soul Capturing Curse". After cultivating it, one could capture gods and order them to act.

In Cui Heng's opinion, since there was a spell to capture a god, there should naturally be a spell to confer a god.

When he saw the remnant souls on the tablets, he thought of some myths and legends he had seen on Earth in his previous life, and he naturally thought of the matter of conferring a god.

"If I can really confer these 170-odd remnant souls as gods and let them all have the corresponding authority, I reckon I can build a fake Heavenly Court."

Cui Heng thought to himself, "If I really have the Divine Investiture Technique, when I return to the Great Jin in the future, I can even confer the title of True God on the Hong River Water God to save people from water disasters."

Prosperous Great Zhou, Arrival of Acquaintances