Extended data:
Changes in China's borders:
In the 1960s, China began to sign border treaties and agreements with neighboring countries such as Myanmar, Nepal, Mongolia, Pakistan, Afghanistan and North Korea, and demarcated the border, which set off the first wave of demarcation climax since the founding of New China. However, the border problem between China and the Soviet Union, Vietnam and India cannot be solved.
After the disintegration of the Soviet Union, China ushered in the second climax of demarcation. Border agreements were signed with newly independent countries in the north, such as Kazakhstan, Tajikistan and Kyrgyzstan, and the borders were demarcated.
Sino-Russian border negotiations have also begun to advance. On June 5438+ 10, 2008, China and Russia held the unveiling ceremony of the boundary pillar of Heixiazi Island in Fuyuan City, Jiamusi City, Heilongjiang Province. So far, it has taken more than 300 years for China and Russia to settle the border dispute since 1689 Sino-Russian Nebuchadnezzar Treaty.
After the disintegration of the former Soviet Union, the border was demarcated with independent countries, while in the south, China and Viet Nam started border negotiations. After more than ten years of arduous negotiations, on the last day of 2008, China and Vietnam announced the completion of land boundary demarcation and monument erection, which completely solved the land boundary and the Beibu Gulf maritime demarcation between the two countries.
Baidu Encyclopedia-China Border