The plot synopsis of Hunting the Bold Woman

College student Tang Yanhua sneaked into model Yu Yuting's room and attempted to kill Yu. But before she could take action, Yu had already been killed, but Tang never knew it. Later, Yu's friends Ding Qianqian and Feng Yingying were also killed by Tang. It was not until Tang was in a nightclub that he poisoned another friend of Yu, Li Liqing, that he was finally arrested. It turned out that they had beaten Tang's mother in the hotel due to a misunderstanding, and Tang killed them to save his mother's life. Who is the murderer who killed Yu Yuting?