Shen Wanzhi was selected by her grandma and became the maid of the concubine Shen Shurong of the Shen family.Due to an agreement made when he was young, the eldest son Pei Huaijin loved Shen Shurong very much. Even if he was unable to have children, he would no longer take concubines.Therefore Shen Zhi will take on Pei.