The literary inquisition in the Song Dynasty was not as cruel as that in the Ming Dynasty, so Cai Jiu didn't take it seriously at first. "What did you do with this army?" When Huang Wenbing linked Sung River with nursery rhymes, the fatuous Cai Jiucai became alert. He is eager to make contributions to the fact that Song Jiang has committed a crime. This magistrate says that if you commit a crime, you commit a crime. At that time, the dynasty encouraged this judicial practice of "killing one thousand by mistake rather than letting one go". This practice urges officials, big and small, to try their best to find signs of rebellion among the people in order to make meritorious deeds and get promoted, and then nip all unstable factors in the bud, and it doesn't matter whether the method of "strangling" is legal or humane. This practice of "trapping the people in crime" often results in "driving the people out of the way". Therefore, we can see that before putting Song Jiang on death row, it is enough to extort a confession by torture without official proof and let him admit that he wrote anti-poetry. In this lawsuit, Cai Jiu is both a judge and a prosecutor, and Song Jiang has no chance to defend himself. On the card of the culprit who beheaded Song Jiang, he wrote: "There is a prisoner in Jiangzhou, Song Jiang, so he sang anti-poetry, slandered evil words, and tied the water margin to force the bandits, so he was beheaded." Convicting poetry is a literary inquisition, and making false rumors is a subjective assumption. Children in Beijing sing a ballad saying that a man named Song Jiang "has spread chaos in Shandong." It's none of my business You have no proof that I spread it on purpose. If I follow this logic, I will make up a ballad saying, "There is a big sacrifice under the grass and I live in Tokyo. Disciples have traveled all over the world to carry Zhao Jiading. " It implies the meaning of Cai Jing usurping the throne, so let the children sing, do you have to behead Cai Jing? This kind of "false connection" is not Song Jiang himself, but Cai Jiu and others. As for the connection with Liang Shanqiang Kou, it was after Dai Zhong sent a false letter, but before that, Song Jiang had entered death row.