When the Wanbang envoy came to the court, the eldest lady was not healed from her injuries. The task of accompany the city master to see the envoy fell on the second lady's head, and the task of helping the second lady's makeup fell on Si Yan and Tong Rui. Si Yan tested Tong Rui's identity, but Tong Rui cleverly avoided it. Lan Miao had long been in love with Qi Guanbao Xin, but because of her master and servant status, she never made it clear. Si Yan encouraged Lan Miao to take the initiative to express her intentions, and decided to close her relationship with Qi Guanbao, but an oolong appeared. Hu Ying provokes the relationship between Lan Miao and Si Yan. Si Yan found that there was a page missing in "The Herbal Minutes". Si Yan wanted to go out of the house to buy a new one. Hu Ying learned the news and captured Si Yan and forced her to ask her the purpose of leaving the house. Qi Guanyi found evidence of the sneak attack on the eldest lady, showing that Si Yan was the murderer, so she had to lock Si Yan in the firewood room, and Hu Ying punished Si Yan for her personal revenge.