Yan Xing encounters street bullying and discovers that the victim is actually her fourth sister. She steps forward to protect her without hesitation, but is unexpectedly scolded by her fourth sister.Entering the palace to meet the Holy Emperor, the Empress Dowager wanted to commend him for his heroic actions. Yan Xing humbly expressed that he did not want to be rewarded in the name of Mrs. Shen, but hoped to continue to investigate the truth as Secretary Yan.Xu Wan stood aside and couldn't help laughing at Yan Xing's ambition, because this was exactly what everyone expected.The Empress Dowager appreciated Yan Xing's talent in solving cases, readily approved her request and gave her the power to investigate the case.Yan Xing felt happy and vowed to use his name as a scribe to uncover the many mysteries in the world.

After returning from the palace, Yan Xing met Xu Xiangren by chance, and the two discussed the dripping Guanyin poison case together.Xu Xiangren revealed that the investigation has involved Rong Zhui, the owner of Tongmingguan.Later, Yan Xing cooperated with Xu Xiangren and discovered the poison of Dripping Guanyin in Rong Zhui's residence, and finally successfully arrested Rong Zhui.

At the same time, Shen Du was busy with another matter. He personally delivered good medicine to the third son of the Liang family. The two had a deep friendship, and Shen Du also helped his mother get out of trouble.Talking about the dripping Guanyin poison case, Shen Du revealed that the real culprit has not yet been identified, but unexpectedly learned that Yan Xing had made a major discovery and Rong Zhui was involved in the case.Mr. Liang was shocked after hearing this. Shen Du reiterated that he had nothing to do with the case and encouraged him to focus on the future.

When Rong Zhui was interrogated, he frankly admitted the poisoning.It turned out that she was already pregnant with Liujia, and in order to protect herself and her unborn child, she did not hesitate to take risks.The reasons behind this are complicated. The Liang family father and son are greedy and lustful, and there are constant disputes within the family. Rong Zhui is just a pawn in this dispute.

In order to find out the truth, Shen Du went deep into the tiger's den to visit Mr. Liang and questioned him about the conspiracy behind him.Mr. Liang smiled bitterly and said that he was helpless, and tried to fight back by telling Shen Du to sue his father.Shen Du remained unmoved and bluntly stated that he suspected that the Liang family had important drawings hidden in them and that they were related to the death of the eldest son of the Liang family.Under Shen Du's questioning, Mr. Liang finally revealed the truth. Shen Du became furious and used torture tools to force Mr. Liang to do it. Mr. Liang's face was left with scars and he regretted it.

When Shen Du stepped into the secret room, the memory of his father's steadfastness and unyieldingness surged in his heart.He knew very well that his father refused to join the traitor and did not change his original intention even when faced with the test of life and death, but in the end he was wronged for collaborating with the enemy and treason.Shen Du is unswervingly determined to clear the Shen family's grievances and expose the truth about the weapons plot frame-up. He collects evidence bit by bit and vows to restore the historical truth.

On the other side, Yan Xing celebrated the success of solving the case with everyone, and the dinner atmosphere was warm.Lu Chuichui brought the news that Yan Xing's pen pal Xiao Chichi was about to meet, which made everyone laugh.Xu Xiangren took the opportunity to invite Yan Xing to have a drink with him, but was interrupted by Shen Du, who was firmly opposed to Yan Xing having any closeness with other men.At the banquet, Shen Du acted alone and drank heavily. In the end, he was drunk but still bravely challenged.Upon seeing this, Yan Xing came up with a plan and helped Shen Du to the outskirts.Yan Xing, who was in a drunken state under the moonlight, cleverly used his drunken state to teach the fourth brother-in-law a lesson. Although this misunderstanding was embarrassing, it also added a bit of fun.

On the way home, Yan Xing carried the drunken Shen Du on his back. Shen Du mentioned in his sleep that the prison was the starting point of their fate.Yan Xing recalled the past companionship with mixed emotions in her heart, and Shen Du mistakenly said the words of thanks to Xu Wan, which made Yan Xing shed tears, but she quickly adjusted her emotions to prevent the tears from falling.Yan Xing's forehead was scarred when she accidentally fell, but she endured it all silently.

Shen Du woke up the next morning, blaming himself for last night's gaffe. He wanted to ask about last night's events, but Yan Xing avoided the topic in an understatement.Yan Xing reported to Prime Minister Zhang as usual, and his words seemed a bit perfunctory, but Prime Minister Zhang tacitly understood it and did not go into details.

On the way to the Ministry of Punishments, Yan Xing once again encountered a small accident and fell down. Pain and helplessness were intertwined. She could only smile bitterly to accept that the pain could only be endured silently by herself.