I Let You Work as an Undercover Agent, but I Didn't Let You Become Bigger and Stronger.

Dark-bellied + Decisive in killing + Absolutely holy + Not a true cultivator Han Yue was selected by his superiors to work as an undercover agent in a gang in a border province. Faced with such a dangerous task, Han Yue refused at first. After all, why spend thousands of dollars a month for life? Until he saw the photo of the gangster sister-in-law, he said sincerely: "This task is very challenging for me. I want to challenge my weakness."