Through the phone conversation between Sinan and Yan Ping, it was revealed that Yan Ping is the younger brother of the principal's wife, not the principal's wife herself. Yan Ping revealed his family relationship with the principal and hinted that A company's winning bid for the playground project may be related to this. Sinan found through investigation that the winning bid price for the Fengming Middle School playground project was exceptionally low, implying that there were problems behind the project. Qixia suggested that Sinan communicate deeply with his father to obtain more clues. Sinan's father revealed the sudden departure of the security guard and the possibility of Zhao Zhensheng being reported due to financial issues, but denied that Sinan's mother was involved in the report letter. Qixia and Sinan believe in their father's honesty and continue to investigate the truth.

Chapter 10: A Night of Horror

When Zheng Xiaohu was pondering the truth, images of movies and TV dramas came to his mind, causing him to be unable to concentrate and even affecting his taste buds. After Qixia whispered to Sinan, Sinan became emotional and thanked Qixia, revealing that he was about to meet his mother. Qixia asked if it was possible to meet with Sinan's mother, and Sinan agreed and expressed doubts about past events and her mother's life.