The Birds Fill the Courtyard: Reborn in Banggeng's Body

A modern loser transmigrates into a book as Bang Geng from the Siheyuan courtyard. There, he encounters a reborn Sha Zhu seeking revenge, causing the story to change dramatically. The former child of destiny, a heartless ingrate, becomes the target of abuse by the courtyard’s various residents. After growing for a while, he begins to fight back and leads the Jia family down the right path, helping them build a better life and grow wealthy...

(No System, no pocket dimension, and the protagonist is pretty pathetic early on. I’m a new author, so please go easy on me. Thank you, everyone!)