Ghosts shouldn’t exist in this world. After a certain period of time, lightning would strike and kill these ghosts, not allowing them to exist.

Specters were the strongest of these ghosts, just like cultivators for humans. After reaching a certain level, they would have to face lightning tribulation.

Those surpassing one were called One-Tribulation Ghost.

Those surpassing two were called Two-Tribulation Ghost.

Three was Three-Tribulation Ghost King.

Four was Four-Tribulation Ghost King. 

However, this type of cultivation was not tolerated by the heaven and earth even more than corpse evils. The tribulation was unbelievably strong. Surpassing two was hard enough; surpassing three to become a Ghost King was even rarer.

A Three-Tribulation Ghost King was on the same level as a Giant, hence Feiyun’s worries. Jingyue and...