Episode 10 recap: Zhao Xiao Liu paid respects to Song Ci as a master.

Song Ci is currently puzzled, but knows for sure that this matter is definitely related to Mr. Zeng. It seems to be a well-planned conspiracy. Li Zi Fang is also analyzing the situation nearby. This person is extremely skilled at moving around the city, but if they want to go unnoticed in the military camp, they could pretend to be a guard and blend in. Suddenly, Song Ci remembered the case of the female ghost and realized that there might be more than one culprit.

The innkeeper's sister came to find Bai Xue Yan. She and her brother planned to leave this place and hand over the inn to Bai Xue Yan. However, at that moment, a person in black suddenly rushed out and claimed that the innkeeper's sister was the culprit, intending to take her away. After she was taken away, another person in black also emerged.

It turns out that the person who took the woman was Yin Qiao, just to lure out another accomplice. All of this was arranged by Song Ci, and the other person in black turned out to be the innkeeper and his sister. Song Ci initially only had suspicions, but became more certain of Mr. Zeng's murder after seeing the two of them.

However, Song Ci believes that the other two messengers were killed by someone else and not related to them. Firstly, there is the special fragrance made by Bai Xue Yan, and the sound that Zhao Xiao Liu heard was the sound of the siblings dismembering bodies. Zhao Xiao Liu had previously gone to find Bai Xue Yan, and from this, it can be concluded that Bai Xue Yan is also not a suspect. Only the innkeeper's sister could obtain Bai Xue Yan's fragrance.

The murder weapon was hidden in the back kitchen, and Song Ci discovered bloodstains there. The innkeeper had been pretending to have an injured leg all along, in order to conceal the fact that he possessed martial arts skills. The parents of the innkeeper and his sister were once killed by the Jin people, which is why they despise the Jin people. Initially, they didn't plan to take his life, but by chance, they discovered an undestroyed secret letter that identified him as a Jin envoy named Zhuo Lutu.

At that moment, Zhao Xiao Liu stepped forward to plead on behalf of the innkeeper and his sister, suggesting that the matter was of great significance and needed further consideration. Bai Xue Yan was deeply concerned about the innkeeper and his sister, and after years of contemplating death, they naturally felt that there must be something suspicious going on.

While Song Ci and the others were having a meal, Zhao Xiao Liu brought two bottles and directly approached Song Ci, expressing his desire to become Song Ci's apprentice. Song Ci was speechless, and Zhao Xiao Liu believed that Song Ci's ability to solve cases with very little evidence was truly remarkable. Furthermore, as long as Song Ci was involved, the cases of the other two messengers would surely be solved soon as well.

Zhao Xiao Liu even offered to help Song Ci repay the debt owed to Yin Qiao in order to become his apprentice. Song Ci owed Yin Qiao 500 taels of silver, which was not a small amount. Bai Xue Yan initially thought that Song Ci had rescued him, but it turned out that Zhao Xiao Liu saved Bai Xue Yan by presenting several paintings by Rui Wan.

Due to financial reasons, Song Ci was willing to accept Zhao Xiao Liu as an apprentice. Afterwards, Song Ci sought Bai Xue Yan's understanding of the situation regarding the innkeeper and his sister. Song Ci expressed sincerity and mentioned that he simply wanted to communicate and exchange ideas with Bai Xue Yan, as he lacked expertise in pharmacology and relied on Bai Xue Yan.

Zhao Xiao Liu continued to analyze the situation, believing that Usman was definitely involved in this matter. In that case, Song Ci planned to visit Usman again tomorrow morning. They currently had evidence in their hands, which was a secret letter stolen by the innkeeper from Mr. Zeng's room. When Li Zi Fang saw the letter, he found the handwriting very familiar but couldn't recall whose it was.

They subsequently went to meet Usman to gather more information. Usman described some scenes he witnessed on the night of the incident, but his account suddenly deviated from the original circumstances. Song Ci informed Usman that anyone in the inn at the time was a suspect in the murder case. With the messengers from the three countries now dead, Usman became extremely worried that the killer might target him next.