My Years as Mr. Yin Yang

Cui Zuofei accidentally drowned and died. In the underworld, he met Jiushu, who taught him the Sanqing Tome, and he became an disciple of the Sanqing techniques. He was able to return to life and got a job with a fortune teller, where he met another Sanqing disciple Yi Xinxing. The two got along well, and they decided to strike out on their own to slay demons and fight evil, in a series of stirring adventures.

(Source: Tencent, translated)