Pei Xuan, an impartial Confucius, was originally the owner of Yinmachuan and had nothing to do with Liangshan. Shen Xing Taibao Dai Zong went to Jizhou to find Gongsun Sheng, passed by Yinmachuan and met Pei Xuan. Pei Xuan admired Liangshan's fame and offered to join Liangshan, which eventually became a reality. As Pei Xuan, who has neither factional background nor high martial arts, he received a very high courtesy in Liangshan. At the time of Juyi, although he was listed as a detective, he ranked 47th, and was also a military and political officer, in charge of Liangshan rewards and punishments. However, in Cheng's Remnant Shui Bo, the hero highly valued by Song Jiang left Liangshan after leaving a letter, and was never heard from again. What the hell is going on here? We might as well review what happened first.

According to the seventy-third quotation of Water Margin, Cai Jiu, the magistrate of Yanzhou, killed the people, causing public outrage. After learning this news, Song Jiang and Wu Yong immediately sent troops to attack Yanzhou. In order to strictly observe the military discipline, Lu Junyi specially said to Song Jiang before the war: "This invasion was originally a crime of hanging the people, and the military law should be extremely strict. Pei Xuan, a tough hole, should be asked to join the army and take charge of military law. If he violates it, he will be executed immediately. " This suggestion was immediately adopted by Song Jiang. Therefore, Pei Xuan came to Yanzhou front with Liangshan army.

After some fierce battles, the Liangshan army finally conquered Yanzhou City. Pei Xuan was deeply touched by the horror of Yanzhou people. He thought to himself, "Although he was in a humble position, he still asked his conscience and justice. Unexpectedly, he got acquainted with corrupt officials and almost lost his life. Later, I had to go to the water margin and lived for a long time. This Gong Ming brother sent an army and gave me the burden of military law. It was only for the poor who were hungry and cold, and he couldn't stand the help of his men. If my work is not solid, I am not only sorry for these poor people, but also sorry for my brother Gong Ming, but I will not be myself. " Therefore, Pei Xuan's law enforcement in Yanzhou City was very fair and strict, which won the praise of Song Jiang and Wu Yong. However, at this time, an emergency made Pei Xuan completely disappointed with Liangshan.

The story goes like this: After Yanzhou City was breached, Zhou Tong, the bully, together with Mao Xing Kong Ming and Kong Liang, the lonely god of war, ransacked the cloth in the city and quietly took it to the brothel to entertain himself. One night, Song Wu, who was in charge of night patrol, found several minions acting suspiciously, so he followed them all the way to the brothel and found out what Zhou Tong, Kongming and Kong Liang had done. Zhou Tong didn't agree with this, and had an altercation with Song Wu. Just then, Pei Xuan came to the front of the army with a law enforcement flag. When Pei Xuan learned the truth, he ordered several small leaders and pimps at the scene to be taken away.

The next day, when Pei Xuan was about to interrogate these people, he suddenly learned that Zhou Tong had forcibly taken away these little leaders and pimps with more than 100 minions in the early morning. Not only that, he also destroyed a local resident shop related to the case, took the couple away and threatened to burn down the whole street. Pei Xuan believes that if things develop further, Liangshan will have a great negative impact, so he quickly found Song Jiang and reported the situation truthfully, hoping that Song Jiang could handle Zhou Tong and others in time and strictly abide by military discipline.

To Pei Xuan's surprise, after listening to Pei Xuan's report, Song Jiang and Wu Yong did not show their attitude, just casually perfunctory words and told Pei Xuan to go back and wait for news. However, Song Jiang and Wu Yong did not punish Zhou Tong and others for their bad behavior, but on the one hand, they lightly informed Zhou Tong and others not to go too far. At the same time, Wu Yong asked someone to tell Song Wu to "only ask for eight points in everything, not too tight". In this way, these bad events in Yanzhou have not been dealt with.

After learning the truth and the attitude of Song Jiang and Wu Yong, Pei Xuan left Yanzhou and withdrew from Liangshan, quietly leaving and never heard from again. Why did Pei Xuan flee Liangshan? An unknown imitator related to the case told the truth. He said, "Since I returned to the hut, everywhere I went, I always weighed out gold and silver and ate wine and meat in a big bowl. Even the orders given by the leaders are never very true. This time, we sent troops, and the land was tight. We didn't even have a chance to have fun. We just became an outlaw and didn't really contribute to the country. It's not even a few taels of silver a month! If I had known this, other places would have become weeds. Why go to Liangshan? "

In the eyes of these admirers, he is not contributing to the country, but robbing the house. If it's just for a few taels of silver a month, it's better to go to other hills and become an outlaw. Why stay in Liangshan? As Song Jiang and Wu Yong, their survival and development depend on these minions who work hard for themselves. Once the management is too strict, they are worried that they will leave Liangshan, thus weakening the strength of the cottage. Therefore, you can only turn a blind eye.

As for Pei Xuan, he had become an outlaw, but in desperation, he always wanted to accept the favor of the imperial court and lead a normal life. If Liangshan heroes Jiang and Wu Yong fail to observe strict military discipline, they will not only fail to win the favor of the court, but also lose the trust of the people. It is only a matter of time before they perish. Judging from the way Song Jiang and Wu Yong handled it, Pei Xuan was completely desperate. It is better to leave Liangshan as soon as possible than to do nothing like this. This is Pei Xuan's mentality at that time.