Miao Feifei conducted a forensic investigation based on the fatal wound shape of Yu Boss, and captured the old craftsman who made a special crossbow. However, it was unexpected that the old craftsman did not give Xu Wei, but instead explained that his joint was called Lu Mang, and Lu Mang's boss was a woman with the smell of ambergris. Zhuang Rui and Huang Fuyun pretended to be customers of the dealer and went to the car dealership to investigate, but found that the car dealership helped Xu Wei smuggle antiques. According to the clues given by Qin Xuanbing and Zhuang Rui, Miao Feifei led people to intercept the stolen goods, and successfully captured Xu Wei and Uncle Xu Zhendong. On the parting, Miao Feifei accidentally discovered that Qin Xuanbing's body had the smell of ambergris, and she became suspicious.