Start: I Am an Undercover Agent in the Holy Sect

He traveled through the world of cultivating immortals and became the chief disciple of the Immortal Sect. He was sent by the sect master to train against the Holy Sect and obtain some information on the way. "What! Five immortals?" "What! Are you using the elixir as a carrot?" "What! My cultivation level is the lowest in the sect?" Many years later, Gu Qing returned to the Immortal Sect, and thousands of disciples saluted and called him Senior Brother! "Big brother? What big brother? I am the leader of the Holy Sect."