Zheng Zongjun's "Revenge Fat Man" engagement is an engagement between parents when they were young. Judging from the relevant public information, Zheng Zongjun's engagement to revenge the fat man was an engagement between his parents when he was a child. When he was a child, his master Justice was bullied by others because he was fat, and then he fled to his grandfather's house, where he was trained by the devil. Eight years later, he came back as a handsome boy.