In addition to being stupid and stupid, it also means doing things without thinking and being reckless.

Mountain cannon was originally the lingo of the "bearded" (bandit) in the Northeast. Cannon was very popular at that time. The bandits got some native cannon and second-hand cannon, but the quality was not good; even if the quality was good, the skill of the gunners was not good. No, so cannons are always inaccurate.

Over time, people collectively called these cannons mountain cannons, and bandits also used the mountain cannon as a joke. Some people do not understand things clearly, or do not consider things well, or do stupid things, or have outdated knowledge (not new knowledge, it is second-hand), or dress out-of-date, they are all called mountain gunners.

In the 1920s, Mr. Zhang Xueliang, as the supreme chief executive and commander-in-chief of Northeast China, vigorously promoted education reform. With the support of Northeast China's strong economy, national celebrities and even foreign professors gathered in Fengtian (Shenyang). Many generals with banditry background also had to undergo re-education. Shanpao and other local dialects are gradually lost.