I Am the Strongest Heretical Celestial Master

[No female lead + no System + villain protagonist + Celestial Master + demons and ghosts + ruthless + raises ghosts and reanimates corpses + no saintly heroics + magical duels] As yin and yang converged, a book called The Art of Heavenly Theft appeared, along with a Taoist traitor. Three years after the three murder cases, Zhang Wendao's whereabouts were discovered once more. The secret art of stealing others' lifespans stirred covetous thoughts among all sides. Defying heaven to change fate, raising ghosts and refining corpses. Old Celestial Master Chen Zhinuo descended the mountain in a fury. “Daoxuan! What exactly are you trying to do?” “What am I trying to do?! I want to be the Celestial Master, an immortal who lives forever!!” Yin and yang converged, the living and the dead coexisted, and as the Luotian Grand Ritual began, a conspiracy came to light. In this world, who is human, and who is a ghost? Humans know how evil ghosts can be, and ghosts know how poisonous human hearts are. Can Zhang Wendao truly become an immortal who lives forever?