In the beginning, Old Madam Su was very dissatisfied with the marriage between Kong Yue and Su Zheng. She felt that Su Zheng deserved someone from a better family. However, at that time, Su Zheng insisted on marrying Kong Yue, and she couldn't really stop her most capable son from getting married!
If Su Zheng really hated her, wouldn't the losses outweigh the gains?
Due to Su Zheng's stubbornness, the old madam finally agreed to this marriage.
However, this also became a barrier in her heart. Even after so many years, she had never really let it go. Hence, for a long time after Kong Yue married into the Su family, Old Madam Su had been very harsh on her. It was only when Kong Yue successfully gave birth to Su Xing and Su Rui, and Su Zheng's power gradually grew stronger, that they had the chance to break free from the control of the old residence and build their own family home.