China's National Interests In South Asia And Its Maintenance From The View Of Geographic Strategy After Cold War

China has 22,000 kilometers land border and 18,000 kilometers coastline, and the geographical feature make China have more neighboring countries than any other countries in the world. All these nearly 20 countries have different social systems, development level, nationalities and culture. Meanwhile, major powers seek for their interests around China. Northeast Asia, Southeast Asia, Central Asia, South Asia have been the "hot spots" after the Cold War and some issues have not yet been completely resolved. Therefore, China is facing a complicated geopolitical situation from a geostrategic perspective.For South Asia, on one side, there are still territorial dispute which could have huge impact on China's energy security. On the other side, South Asia's long-term relative instability coupled with the United States and other powers' involving, which have direct impact on China's interests in the region.Nowadays, South Asia has emerged the continuous development of arms, which could lead to arms race. How to ensure China's national security and the national interest to provide a sustainable economic development inviroment, has become a major issue which can not be avoided.This paper aims to the China's national interests in South Asia from a geostrategic perspective. And it will take India and Pakistan as examples to analyzes and discuss this issue based on geopolitics and geo-economy, so as to keep China's vital interests and its realization.