evidence: The reason why Jiangxinpo was assigned to Myanmar was actually due to a series of complex historical reasons. The Jiangxinpo area has complex terrain, rugged mountains and crisscrossed rivers, making it a place that is quite unfavorable for external transportation and communication. [...] With the founding of New China, China gave up its territorial claims to Jiangxinpo and instead dealt with border issues by reaching an agreement with Myanmar. After all, New China has dealt with the Jiangxinpo issue to the best of its ability and can no longer be held responsible for it. [...] Whether it is historical judgment or international demarcation, Jiangxinpo has become a part of Myanmar. In the current complex and ever-changing context of international relations, China and Myanmar should cherish the overall situation of friendly cooperation and jointly promote the development of bilateral relations.