In the history of China, from the Ming Dynasty to modern times, why did soldiers in Guangxi fight so hard?

1 Guangxi is an immigrant area. Many immigrants are exiled prisoners, and many northerners, including the descendants of the most capable army in the Qin Dynasty, are there. Coupled with the famous Zhuang nationality in the Spring and Autumn Period, the gene is symmetrical and flexible. Guangxi has always been an ancient exile, which also shows that the environment is sinister, and the people who come out in this environment are definitely more tough, and the folk customs in Guangxi can be said to be the most tough in the country, just like Bazhou in the Ming Dynasty. Generally, there are not many people outside Guangxi, which leads to great unity within Guangxi, and there are often * * * dead people in the same period, which makes the cohesion and combat effectiveness of the spiritual level much higher. For cultural reasons, I remember hearing that a man was very angry and wanted to kill his bully with a knife. Later, because he was not at home, he killed an innocent man by the roadside. Later, he explained that if the knife comes out, you have to see red, either someone else's blood or your own blood (in general, I can't remember clearly). Guangxi folk customs are so tough and world-class. It is normal to have strong fighting capacity.