Song Jiang is afraid of Gongsun Sheng.
Gongsun Sheng knows more about magic than Wu Yong. In fact, Wu Yong is a teacher and can read people's psychology. When he really encounters a spell, Wu Yong is often helpless. At this time, it is often Gongsun Sheng who comes out, and the result is accomplished. This makes Wu Yong a little afraid of Gongsun Sheng, really. Wu Yong is definitely no match. Wu Yong is Song Jiang's confidant, and Wu Yong is still the same. Song Jiang was worried that his morale would be disturbed by Wu Yong.
Song Jiang needs Gongsun Sheng's help. Gongsun Sheng was a great intellectual, and Song Jiang seized power. If he wants to be a robber, he must ask Gongsun Sheng for help. Gongsun Sheng knew that Sung River was in power and had to come to help for the benefit of Liangshan brothers. Classical was dead at that time, and everyone was naturally bewitched by Song Jiang. Green gang brothers in Liangshan are mostly illiterate. With the help of Gongsun Sheng, they believed everything they said.
Song Jiang thinks he is smart enough to confuse Gongsun Sheng, but in fact, the devil climbs a mile. Gongsun Sheng's teacher, Luo Zhenren, taught Gongsun Sheng the steep method of five thunder days, told him to go down the mountain, and sent him an eight-character mantra, ordering him to "stop in a secluded place and return in sorrow". With the teacher's guidance, Gongsun Sheng escaped without being framed.