Sino-Soviet relations are uneven in history. From the founding of New China in 1949 to the disintegration of the Soviet Union in 199 1, Sino-Soviet relations experienced three stages.

1. 1949 to 1959 was the intimate period of Sino-Soviet relations.

2. The period from1960 to 1978 was the period of "rupture and deterioration" of Sino-Soviet relations.

Third, the period from 1979 to 1989 was a period of "warming up" in Sino-Soviet relations.

We can draw the following enlightenment:

When formulating foreign policy, we should always give priority to safeguarding national interests.

Looking back on the history of the development and changes of Sino-Soviet relations in the past half century, especially the history of Sino-Soviet conflicts, there are

Many experiences and lessons are worth summarizing and learning.

At that time, many viewpoints and practices put forward by both sides were valuable.

Need to re-examine and reflect. This is of great significance to the future development of Sino-Russian relations.