Fengdu Appointed Me: I Am the Undercover Agent of the Great Emperor.

Everyone in the world is afraid of the underworld, but I was born to control Yin and Yang. There is no pain of reincarnation and no limitations of ghosts. From the moment my soul returned to the underworld, I was personally sealed by the emperor and became the only ghost under my direct control. Strange things happen frequently in the world, evil ghosts cause chaos, evil spirits run rampant, and the order of Yin and Yang is on the verge of collapse. Others have been practicing hard for hundreds of years and it is difficult to see the way. I raise my hand and it is the law of the underworld. One step can lead to the underworld, and one word can determine life and death. Up to heaven, listen, down to Jiuyou, all ghosts will bow their heads when they see me, and all evil spirits who encounter me will be killed. I do not cross evil people, do not spare evil spirits, I only obey the laws of Fengdu and maintain the balance of the three realms. The world doesn't know my name, they only know that deep in the netherworld, there is a great emperor's bodyguard, who is at his peak as soon as he is born. Anyone who dares to mess up Yin and Yang, or go against the way of heaven, I will personally come to him, his soul will fly away, and he will never be reincarnated!