China is one of the countries with the largest number of neighbors in the world today. Safeguard China's interests, properly handle diplomatic relations with neighboring countries, eliminate hidden dangers endangering national security, strengthen strategic security research, and create conditions for China to rise peacefully and become a world power.

Korean peninsula

After entering the 2 1 century, the U.S. government took a tough stance against North Korea, which eventually led to the outbreak of the second nuclear power plant in North Korea and the United States, and the situation on the peninsula tightened again. In Northeast Asia, the development of the situation on the Korean Peninsula has always affected the interests of big countries and regional peace and development. The Korean Peninsula issue is the biggest cold war legacy in East Asia. The Korean peninsula has a very important strategic geographical significance and is the intersection of the interests of big countries. The strategic choices of the two countries on the peninsula will interact and influence each other with the factors of great powers. Although both North Korea and South Korea are trying their best to seek reunification, the conflict of ideas and interests between the two sides has led to a situation of seeking reunification unanimously but persisting in confrontation. In recent years, various exchanges and cooperation between the two sides have gradually taken substantial steps, and the development of DPRK-ROK relations has become the general trend. However, the situation on the peninsula at the beginning of the new period will still present a complicated and changeable development trend. On the one hand, internal and external factors that promote reconciliation, promote negotiations and restrict war continue to exist and develop. In particular, the continuation of the Six-Party Talks provides an important opportunity for the peaceful settlement of disputes, and the peace process on the peninsula is likely to advance in twists and turns. On the other hand, the contradiction between North Korea, the United States and North Korea is deeply rooted, and the national interests and policy objectives are quite different. There are still great unstable and uncertain factors in the development of the situation on the peninsula. The possibility of armed confrontation and military conflict cannot be ruled out. The Korean Peninsula is a strategic buffer zone for China's northeast security. The tension on the peninsula will destroy the peace and stability in this region, and will also affect the process of China's modernization. Generally speaking, at the beginning of the new century, the situation on the peninsula will still show ups and downs. Only with the support of big countries such as China and the United States, can the north and south sides of the peninsula truly move towards reconciliation and achieve substantive results.