Let me laugh

After reincarnating as Zhou Xuanji, the prince of an empire, he thought that he would be able to live a worry-free life of luxury. He did not expect to be involved in a rivalry with the Empress herself, who forced him to escape from the palace.
Yet to his surprise, the cheat program that he created in his previous life became reality in his current one.
When he turned two years old, he received the Crimson Dragon Sword, which contained the soul of a crimson dragon!
When he turned three, he received his second legendary sword!
He received a legendary sword once every year, to represent him growing older!
After living a hundred years, Zhou Xuanji adventured the world fearlessly with a hundred legendary swords!
Ten thousand years later, Zhou Xuanji shook the heavens with ten thousand legendary swords, ascending the throne of legends as the Sword Monarch!

I Have Countless Legendary Swords!

Jiang Xue opened her eyes wide. "Will Zhou Xuanji encounter the Emperor's Hatred Diablo?" She asked carefully.

"And, will he become an Emperor's Hatred Diablo?"

Daoya Old Man heard her and shook his head while smiling. "Little girl, you can't just turn into the Emperor's Hatred Diablo whenever you want. Unless you stay in Juedi Cliff for a number of years, even decades, it's still very difficult to be diabolized."

Those people who went missing in Juedi Cliff were either killed by the Emperor's Hatred Diablos or turned into one of them and had no chance to turn back.

"Don't worry. There aren't many Emperor's Hatred Diablos in Juedi Cliff. Few humans and demons have entered Juedi Cliff before. Moreover, after they were diabolized, they wouldn't know how to cultivate. In the end, they would deplete themselves and die."

Explosion of Instinct, Unstoppable