Mother Cheng is Shu Yue's mother-in-law. She strongly dislikes Shu Yue due to her capitalist background and the way she forced her son into marriage. She is greedy and favors her third son, Cheng Jing'an, often using the money sent by Cheng Jingchuan to support him. She verbally abuses Shu Yue, refuses to let her eat properly during confinement, and opposes the family division. She is short-sighted and easily manipulated by her husband.