Episode 16 recap: Li Bing and Hua Kui teamed up.

At this moment, Wang Qi also had great confidence in believing that he could help A Li Ba Ba. Unexpectedly, before they could finish speaking, a large dog suddenly ran up from behind, scaring the people around them and causing them to scatter in panic. Shangguan Qin brought A Li Ba Ba to the ice seller to inquire about clues, but the person there immediately revealed that they had closed their doors yesterday. Upon hearing that someone had purchased ice molds, the people nearby became alert and started asking more questions. They also learned that an umbrella maker who consumed Wushi San had bought the remaining ice there. With these clues, everyone began to piece things together.

Li Bing continued with Chen Shi to the Qin family. The servant on the side immediately arranged for them to sit and wait for the private tutor inside. Unexpectedly, after the tutor sent away his student, he directly called for Li Bing and the others to enter the room. After coming out, Li Bing immediately noticed the worried expression on the steward's face and wanted to know what was going on. Just as they were about to close the door, he stopped them and took them outside. This time, the steward unhesitatingly revealed that the master of the house had been very strict in disciplining the young master since childhood, which led to him developing a stutter. The old man had planned to let the son be, but unexpectedly, the second young master suddenly became very intelligent and was able to continue his studies. The family had even planned to send him to the university. However, they discovered that he was inhaling stone powder and couldn't break the habit, which made the father angry and expelled him from the house.

On the other side, Wang Qi continued to question the situation of the second young master of the Qin family in front of the adults. Seeing that the other party was unwilling to reveal anything, he even offered to help keep it confidential. The adult next to him directly mentioned that the second young master of the Qin family was not good at socializing and was strictly disciplined at home. He didn't attract much attention, except for one time when he played a beautiful melody on the qin upstairs. However, the sound had a hint of melancholy.

Shangguan Qin, followed by A Li Ba Ba, went to the shop. When he saw the person blocking his way, he didn't hesitate and rushed into the room. Unexpectedly, someone was hiding in the shadows and observing. After Shangguan Qin pushed aside the umbrella, he discovered a corpse inside. The person next to him immediately fled. Unable to find the person, they had no choice but to call for the officials from the Dali Temple to investigate. After examining the symptoms, the doctor confirmed that the deceased had died from poisoning.

Upon seeing the pattern on the umbrella, Cui Bei began to feel a sense of oppression. He also knew that it might indicate that the deceased had limited hand mobility. However, the red pattern on the umbrella was different from others, and it raised suspicions that it was a result of the deceased taking Wushi San. They also began to question the efficacy of the substance in treating injuries. Upon uncovering these clues, Shangguan Qin decisively put the IOUs in his pocket and prepared to continue investigating alone. A Li Ba Ba, encouraged by the others, eagerly followed along. Shangguan Qin then went to the pawnshop alone to inquire about the pawned qin. Unexpectedly, the shopkeeper immediately demanded money from him and continued to be difficult. Angered by this, Shangguan Qin turned to leave, but the shopkeeper chased after him and publicly admitted his mistake, revealing that a woman had come to redeem the qin.

Later, Li Bing, accompanied by Chen Shi, went to the tavern to find the female partner and questioned her about the bait. Even though she was unaware, she told them that the miraculous drug could help people with disabled hands recover. Both of them decided to work together to uncover the clues and avenge their fathers.

Upon returning, Li Bing regrouped with the members of Mingjing Hall and learned from others that the young master of the Qin family had quit his drug addiction. He began to suspect that something was amiss.