The Demon Lurking in the World of Cultivation

In his previous life, he was an agent lurking in an enemy camp. After his death, he traveled to a world of cultivation. Unfortunately, he time-traveled into the body of a little demon, and was forced by the big demon to transform into a human, enter a cultivation sect, and steal the fairy grass. So the protagonist Wang Yicheng began another lurking career after time-traveling... A magical stone tablet can provide ways to improve qualifications at different stages of cultivation. However, it requires auxiliary means such as elixirs, formations, and weapon refining. Let's see how Demon King Yicheng lurked in different sects, secretly learned various techniques, and finally became a super master who integrated alchemy, formations, and weapon refining.