(This novel combines urban fantasy, cultivation, comedy, romance, and transmigration across three worlds, among other elements. Both the protagonist and the villains are sharp-minded.)
After an accident, Zhang Cheng discovers an old man who has been living inside him for twenty years.
The old man: "Ha ha, kid, after all these years, you've finally noticed me?"
Zhang Cheng: "Sir, I'm begging you, get out of my body already!"
The old man: "Sure, but first you have to cultivate with me."
Someone asks, "You're so powerful. Where is your master? Can I meet him?"
Zhang Cheng: "Oh, he's inside my body. He hasn't come out yet..."
(This is the story of a young man who seems careless on the outside but is thoughtful, brave, and decisive as he cultivates in the city. See how he overcomes obstacle after obstacle and uncovers hidden truths.)