In the TV series " Rules Before Divorce," Zhang Xiaofan and Li Xin divorced because their relationship had reached the end and could no longer be maintained. To be specific, Zhang Xiaofan thought that Li Xin no longer loved her and there were many contradictions and dissatisfaction in their marriage. Li Xin thought that Zhang Xiaofan was too harsh and could not adapt to her family life. Therefore, the two decided to divorce and end this unhappy marriage.