Zhang Ping stopped Gong Yuzhen who was leaving in a hurry outside Lan Jue's mansion, and asked her who she conspired with to kill Chu Qier. Gong Yuzhen said that it was not her intention to kill Chu Qier, but that Chu Qier was deceiving others too much.
At first, Gong Yuzhen and Chu Qier competed together for the qualification to enter the painting. In order to threaten Gong Yuzhen to withdraw from the competition, Chu Qier even found someone to defile Gong Yuzhen. All over the capital, Gong Yuzhen had no choice but to agree to withdraw from the competition and accompany her. Gong Yuzhen hated Chu Qier very much. At this time, a black man appeared and offered to help her kill, and asked her to throw a rouge box into the underground drain on the day of the competition to guide him.
Zhang Ping believed that Gong Yuzhen and the murderer were accomplices in the murder, and was about to persuade her to go to the Ministry of Criminal Justice to surrender, when Lan Jue appeared. Lan Jue thinks that Chu Qier bullied too much, and it has nothing to do with others that he ended up like this. Now that his teacher Gong Songming has been clean all his life and is about to retire with a reputation, it is not worth it if he gets stigmatized because of Chu Qier.
Zhang Ping asked Lan Jue if she helped Gong Yuzhen cover up her crimes just for Gong Songming's Shangshu? Lan Jue discovered at the scene that Gong Yuzhen and the murderer had joined forces to kill, and then covered up the evidence for him, and obstructed her own investigation in every possible way. Lan Jue wants to bring Gong Yuzhen back to the mansion, but Zhang Ping accuses her of being unworthy to be an official. He is so persistent in the truth that at least he is open-minded, but does Lan Jue really have a clear heart?
Lan Jue came to Shangshu's mansion late at night, and he presented the rouge box, saying that he would send more people to protect Gong Yuzhen. Gong Songming knew that Lan Jue did this to recommend Shangshu's memorial. Although Lan Jue was determined to win the position of Minister of Rites, although Gong Yuzhen was an accomplice, her crime did not warrant death, and she, a weak woman, was thrown into prison and exiled to the border, which was simply unbearable. Gong Songming believed that covering up the crime was not a gentleman's act. He blamed himself for failing to protect his granddaughter, and was willing to bear the crime with his granddaughter rather than accept Lan Jue's good intentions to cover it up.
Gong Songming recited Lan's father's poems about his aspirations in prison, and Lan's father expressed his aspirations with poems in prison, full of loyalty and indignation, overflowing with words, and finally did not want anyone to reveal the truth until he was asked to kill him. And he and Lan's father are close friends, and he didn't tell Lan Jue about this for so many years, and even didn't want to recommend Lan Jue because of Lan's father's entrustment. Father Lan only hoped that his son would stay alive and never become an official. Twenty years ago, he rescued Lan Jue who was dying from beating, and told him not to avenge his father, but to live a good life. Unexpectedly, Lan Jue unexpectedly figured it out, studied hard and decided to enter the official career. Over the years, he knew that Lan Jue was obsessed with serving as Minister of Rites to avenge his father's grievances, but he didn't want Lan Jue to be deeply involved in this. Gong Songming believed that he had failed his friend's entrustment, so he could not protect Lan Jue in the future, and could only rely on himself.
After Lan Jue returned to the mansion, she arranged for Xudong to send Gong Yuzhen back to the Gong mansion, but at this time the maid came to report that Gong Yuzhen had received a letter to discuss the case with others, which would bring the truth to the world, but Gong Yuzhen disappeared unexpectedly after attending the appointment. Lan Jue told Wang Yan about this, and wanted him to help find the murderer and rescue Gong Yuzhen. At this time, Zhang Ping came to the Ministry of Criminal Justice to tell Wang Yan that the miracle doctor Sun of Baoshantang died strangely, and the death condition was consistent with that of Chu Qier. Zhang Ping accused Lan Jue of misleading them to investigate the case due to selfish desires, and let the murderer continue to kill. Lan Jue also apologized for this, but now that Gong Yuzhen is missing and his life and death are uncertain, he also wants to catch the murderer as soon as possible and bring him to justice.
The murderer killed two people in a row, and may continue to commit crimes. Several people started to investigate from the poison. They re-examined the clothes of Chu Qier and Dr. Sun. Lan Jue found suspicious points from the "Differentiation Collection" written by Dr. The murderer smeared the poison on the ink pad, which was printed on the seal of "Diagnostic Collection", and Dr. Sun could be poisoned to death when he turned it over. Zhang Ping speculates that the poison that killed Chu Qier was hidden in the last opened lotus core in her hand, and Zhang Ping also saw the three characters "Yinjitian" in the lotus petals.
Then Zhang Ping and Lan Jue continued to search for relevant literature on this word. Lan Jue found a legend about Yinjitian in the literature, which recorded the saint of medicine, the saint of dance, the saint of wisdom, the saint of farming and mulberry, and the saint of prison. , Le Sheng, and Zhang Ping speculated that the murderer was killing people according to the characteristics of the six sages. Now that the medical sages and dancing sages are all dead, Lan Jue deduces from the standards of the sages of wisdom that the four sages of the Feng family in the Wuming Pavilion are the sages of wisdom today. The two hurried to the Wuming Pavilion and found that the four sages of the Feng family had been killed.