Meng Siyuan passed through the book and became the evil mother-in-law of the original heroine Bai Siyao. In order to save her life, Meng Siyuan came up and revealed that her adopted son Mu Wenzhou was the son of a thin horse in Yangzhou, and wanted to drive Mu Wenzhou out of the family once and for all. But someone from the palace said that Mu Wenzhou was actually the emperor's illegitimate son. Meng Siyuan had no choice but to leave Mu Wenzhou after beating him. After Mu Wenzhou learned his identity, he was seduced by his concubine Manniang. While Meng Siyuan was traveling, he spent all the silver in his house to buy back many women and tortured them to death. He also claimed that he was just experiencing the feeling of the emperor's three palaces and six courtyards in advance. Meng Siyuan angrily reported to the official, but was beaten and forced to kneel by the emperor. Bai Siyao came to the rescue, and Meng Siyuan was exempted from punishment. They worked together to make Mu Wenzhou spend three months in jail. The Empress repeatedly hinted that she wanted to save the prince, but the Prince panicked and planned to force Bai Siyao to jump off a cliff and then save the beauty heroically. Bai Siyao was seriously injured and fell into a coma. Zhou Siyuan personally came to rescue Bai Siyao. In order to avenge Bai Siyao, Zhou Siyuan set up Mu Wenzhou, the prince, and Mannia. Later, Mannia and Mu Wenzhou were killed by the prince. Zhou Siyuan released the news, the imperial censor was impeached, and the prince was deposed. Zhou Siyuan took Bai Siyao away to Yaowang Valley. A few years later, Bai Siyao woke up. Zhou Siyuan took Bai Siyao to be a doctor in the Jianghu, helping the world and saving people.
