Chinese cabbage was beaten twenty boards is the fifteenth episode. Yang Naiwu and Chinese Cabbage (episode 15): Liu Xitong gave Qian Liu an imperial edict stamped with the magistrate's seal, and Qian Liu perjured himself, proving that Yang Naiwu bought 40 pieces of arsenic in his drugstore. When Chen Lu retried Yang Naiwu, he only showed Yang Naiwu the confession written by Qian Liu in the name of Qian Bao, but Yang Naiwu never imagined that Qian Baosheng, who he fabricated, really testified. Chen Lu upheld the original judgment, sentenced Chinese cabbage to death and Yang Naiwu to behead.