The case of Yang Naiwu and Chinese cabbage is regarded as one of the four mysterious cases in the late Qing Dynasty. Looking up historical data, the real name of Chinese cabbage in history should be called lifelong aunt, and the birth name is A Sheng. Because she likes to wear a white dress and a green skirt when she grows into a young girl, she is nicknamed "Chinese cabbage" by her neighbors. Yang Naiwu, a native of Yuhang, lives in Clarification Lane, Qianjie, Yuhang Town. In August of the twelfth year of Tongzhi in Qing Dynasty, he was a juren at the age of 33.

At that time, as neighbors, the two families lived in harmony. Bi Xiugu often went to the Yang family to chat and eat, and Yang Naiwu also taught Bi Xiugu to read the scriptures. Such frequent exchanges are of course out of place. 1873 10, Chinese cabbage's husband died of a sudden illness. At that time, most of the officials were pedantic scholars, and there was no modern concept of investigation and trial. Most of them started with suspicion and made confessions by torture based on guilty inference, so they immediately suspected that this was an adultery case. The twists and turns are self-evident. The case has been tossed around for more than three years. Although there are many doubts, the post-trial officials still turn a blind eye and extort confessions by torture to maintain the original judgment. In the end, although the unjust case was rehabilitated, all officials who perverted the law and perjured themselves were punished as they deserved, but Bi Xiugu walked around teasing other men because she didn't avoid suspicion, which led to a protest and a staff of 80. Yang Naiwu changed his status as a juren because he didn't follow the ethical code.