Her father betrayed the family and caused her mother to commit suicide. The harm caused to the little girl by the family changes changed her temperament drastically. She hated Huang Ying who caused her mother to die. Because her mother was a nurse, she knew some pharmacology since she was a child. In the end, she drugged and killed her father's lover. Later she discovered that it was her good friend Zhang Meina's mother Li Dongdong who told her mother Liu Lili about her father and Huang Ying, which caused her mother to commit suicide and her family was broken up. She began to complain that Zhang Mina should not break her promise, and gradually her friendship with Zhang Mina also changed. She felt that only Zhang Mina's death could end the resentment in her heart...
Purpose: Harm from the original family will affect a person's growth and even cause irreparable consequences.