Tang Fan introduced himself to the emperor, and Wang Zhi explained the background of Tang Fan to the emperor. Tang Fan was a guest of Suncheon Mansion and was flexible in breaking many outstanding cases. Tang Fan talked with the emperor in public without showing any fear. After the emperor left, Wang Zhishu fell into a stunned head, and he dared to talk to the emperor and exchanged with others.

Tang Fan visited Pei Huai in the company of Suizhou after he left the palace. Han Zao died of being poisoned. In order to find out the cause of Han Zao’s poisoning, Pei Huai personally tasted many poisons and tried to stay awake, instructing Tang Fanti to take notes on the poisoning. After taking poison for many times, Pei Huai gradually gained a lot and analyzed the cause of Han Zao’s poisoning. The murderer mastered Han Zao’s height and shape, and specially formulated a poison for Han Zao.

Pei Huai took the poison for a whole day, and his physical strength was weak. Tang Fan and Suizhou led Pei Huai to eat noodles at the tavern. Pei Huai vomited again without mentioning chopsticks. Tengku saw the noodles at the front of the table. She thought that Pei Wei had no appetite to eat noodles after vomiting. Instead of taking noodles, it was better to take the noodles.

Wang Zhi severely tortured a young eunuch and found out the background of Grandpa Liu from the mouth of the young eunuch. Grandpa Liu managed the bookstore fifteen years ago and met a female officer named Ji. At the first sight of the official Ji and Liu Gonggong, the two often exchanged poems and articles in the study for a long time, like glue and paint. Later, Officer Ji was favored by the emperor and became pregnant with the child. After learning about it, Wan Guifei asked Ji Fei to settle her account. Ji Fei knew that she was in trouble and took the initiative to confess to Wan Guifei, and then hanged herself.

Grandpa Liu committed suicide because of Ji Fei’s suicide, and secretly killed Han Zao, the companion of the prince, and blamed Wan Guifei. Wang Zhi found out the cause of Han Zao’s death and went to the bookstore to confront Liu Gonggong. Liu Gonggong did not deny what he did, and he still hated Wan Guifei. Wan Guifei is a red man beside the emperor. If you check it, you will anger the emperor. Wang Zhi weighed the pros and cons and decided to settle the Han Zao case.