Second, Liangshan heroes have no long-term vision and only value the present. Although we met for the first time, Liangshan suffered a fiasco, but Sung River was overjoyed when he learned that Ling Zhen was captured alive, so he laughed it off and immediately set up an artillery unit under the full command of Ling Town. Ling Zhen once again turned his gun to Hu Yanzhuo to help Liangshan defeat Hu Yanzhuo. However, Ling Zhen was only brilliant for a while, and then he was gradually left out in the cold, and his place of use became less and less. In my opinion, Liangshan simply used Ling Zhen, and didn't intend to reuse Ling Zhen from the beginning. Liangshan's idea is that it is impossible to let the tiger return to the wild, so he just gave Ling Zhen a position and kept it in his own camp.
Third, although artillery is powerful, it also has disadvantages. At that time, the way of fighting mainly depended on manpower, and it was on call. The artillery is inconvenient to transport, with poor maneuverability and bad conditions. Not too far and not too close. If it's too far away, the artillery can't hit it. If it's too close, it's easy to accidentally hurt one of our own. Moreover, the tactics of cooperating with the artillery did not develop, and the artillery gradually faded out, and Ling Zhen became an unknown teenager.