The Protagonist is Pure Evil

Wen Li died saving the man she'd betrayed an empire for—only to wake up in her past, trapped in a cultivation novel where she's the villain obsessed with the wrong man. The Crown Prince she poisoned, blinded, and tried to murder? He's the protagonist. The tyrant she helped seize the throne? Just a side character. Now her system demands she prevent the hero's descent into darkness, but there's one problem: this 'righteous' prince has already been reborn, and he's out for blood. As a celestial prodigy hiding the soul of an ancient god, he's done playing the saint. Can a villainess stop a vengefu…