The Days When I Was Undercover in the Devil's Crooked Ways

Lin Xiaoyi, a time traveler, had been in the Zhengzong for several years. By chance, he was sent to the Evil Sect to work as an undercover agent. What is unexpected is that he accidentally became the holy son of the evil sect and became famous for a while. What's even more unexpected is that he was returned to the orthodox sect and used as an undercover agent by the evil sect. While he was constantly undercover, he unexpectedly discovered the mysterious man who had a great relationship with the death of his previous life. See how he wanders between good and evil sects, and how he finds the mysterious power behind it.