People in Kokang area and Wa state in Myanmar speak Chinese. Are they from China?

Courage is a part of Myanmar, but the locals are all from China. It is said that at the end of the Ming dynasty, descendants of the Ming army who resisted the Qing dynasty gathered there to survive. Myanmar has a big Myanmar, which is not good for other ethnic minorities. In addition, after World War II, the northern minorities all had their own armed forces, and natural conflicts continued. Courage is just one of many armed forces, which attracts people's attention because they are all from China.