First, Yu Qiuyu is having another extramarital affair, and the object of his affection is a beautiful female writer. Second, while indulging in this misconduct, Master Yu became too engrossed, allowing his wife to catch him red-handed. This kind of evidence must not have come from just one or two instances; otherwise, Ma Lan could directly work as an expert at the Ministry of Public Security. Third, Ma Lan, as the person closest to the master, gave a fair evaluation of Yu Qiuyu: hypocrisy, betrayal, and licentiousness.