Paranormal City: An Exorcist in the Time Vortex

Infinite flow + a modest golden finger + clever characters, not a mindless power fantasy. The protagonist is morally ambiguous, ruthless, and decisive in killing. My name is He Yuan. I'm an exorcist, and my trademark is my expressionless face. I've seen too many paranormal things in this haunted city. I make a living thanks to my ability to sense the hidden auras of demons and evil spirits. During one exorcism, I sensed that something was wrong. Behind it lay a conspiracy involving time reversal and experiments on human nature. Hmph. Whoever's pulling the strings, I'll uncover this plot and put a stop to these evil experiments on human nature! I won't let this city be destroyed! Anyone who says I'm just a tool can go to hell!