2. The sea area is vast and rich in resources, but there are disputes with many countries such as the South China Sea, the East China Sea and the Yellow Sea, and the national territory is in danger of being violated;
3. River development, such as the Yarlung Zangbo River in Tibet and the Yarlung Zangbo River in India, is controversial in water resources development, because the Yarlung Zangbo River is in the upper reaches, and its development and utilization have a great impact on the lower reaches, and both China and India are controversial;
4. To the east of China is Ryukyu Islands, which is blocked by the second island chain, greatly limiting the strategic direction of China's outward development.
I know so much ~