MTL - The Return of the Black Technology of Immortal World

Yang Qing never expected that he would travel to the fairy world, let alone that he would have a chance to travel back.It's just that after I came back, I found out that this world is not friendly to cultivation, and it's a completely degenerated world, so what else can I do?Part-time work is not allowed, so he can only rely on the rune technology of the fairy world and develop a little black technology to live his life, so his eyes are directly fixed on the moon above his head, where his dream begins! - Description from novelbuddy