evidence: There is a place called Jiangxinpo on the China-Myanmar border. It is adjacent to Tengchong in Yunnan Province and covers an area of ​​27,000 square kilometers, which is larger than Kunming, the capital of Yunnan Province. It was controlled by China during the Ming and Qing Dynasties hundreds of years ago. [...] In addition to China's deliberate show of goodwill, Jiangxinpo itself has very complicated historical reasons. The China-Myanmar border has changed many times in history, constantly expanding and contracting, and Jiangxinpo is one of them. It has been a no-man's land for a long time. [...] Jiangxinpo is not only geographically classified as a foreign country, but the locals also actively participate in Myanmar's anti-aggression efforts. In other words, after decades of education, the locals have developed a sense of belonging to their Burmese identity.