Cultivating into a Martial Saint by Keeping a Low Profile Beside the Female Demon

Zhou Qing transmigrates. On the first day after awakening the wisdom of his past life, he discovers that he's become the demonic sect Hehuan Sect's "blood cow."

Fortunately, he awakens a System. As long as he has one friendly encounter with a female demon, he can gain Dao Rhymes and use them to improve his martial arts and immortal techniques.