What territories were ceded to foreign countries after 1949? Zhihu?

1) 90,000 square kilometers south of McMahon (China, India) 2) Diaoyu Island (China, Japan) 3) Nansha Islands (China, Philippines, Brunei, Vietnam, Indonesia, Malaysia) 4) Pamirs (China, Tajikistan) 5) Yalu Islands (China, North Korea) 6) Himalayas. Myanmar) Sub-table: China's mineral exploitation right in Myanmar was deprived by Myanmar 9) Territory west of Kashgar (China and Kazakhstan) 10) East China Sea (China and Japan)1) Yellow Sea (China, North Korea and South Korea) 12) Guangxi Land (China and Vietnam).