Episode 18 recap: Qi Zeyu is the target of the Blood Sacrifice Hall assassination.

Ye Xiaosheng glanced around cautiously and then picked up the box before leaving. Frost, who was in the shop, immediately stood up and threw down a silver dollar to follow. Unexpectedly, he suddenly felt a stomachache. Lin Mengchen saw Frost's condition not far away and immediately rushed over to meet Ye Xiaosheng. The two of them witnessed someone talking to Qi Zeyu on the bridge for a while, and then leaving an envelope before departing. Lin Mengchen went to intercept Qi Zeyu, but as soon as she took out her gun, Qi Zeyu recognized her. Meanwhile, Ye Xiaosheng went to stop the man who was supposed to meet Qi Zeyu, but he was shot by that person.

Qi Zeyu immediately brought Ye Xiaosheng back for surgery. The person responsible for protecting Qi Zeyu aimed a gun at the bound Lin Mengchen. The two of them argued incessantly, causing Qi Zeyu, who was undergoing surgery, to become increasingly annoyed. He could only tell Lin Mengchen that everything he was doing was to save more people. After learning that Qi Zeyu used his medical license to collect a large number of antibiotics to save the lives of people on the front lines, Ye Xiaosheng felt puzzled about the Blood Sacrifice Hall's pursuit order. Therefore, he went alone to investigate the situation inside the hall.

Frost suddenly confronted Ye Xiaosheng, mentioning that he had a sudden stomachache in the morning and found the dagger that Ye Xiaosheng had left behind. He suspected that Ye Xiaosheng was involved and demanded to drink the Heartburning Powder together as proof of innocence. Lin Mengchen realized that Ye Xiaosheng might be in trouble and immediately rushed over with a box of fake antibiotics to prove that Ye Xiaosheng was wounded while trying to snatch the box. As soon as the hall master saw the antibiotics, his expression immediately changed, and he ordered Frost to be executed. Ye Xiaosheng and Lin Mengchen saved Frost, but they were surprised to learn that Frost knew the inside story of the Lin family massacre and the death of Jingzhe.