On the Problem of Periodization of the History of Relationship among China, Japan and Russia(Soviet Union) during the 20th Century
CHEN Jing-yan (Researching Center of Northeast Asia, Jilin University, Changchun, Jilin,130012,China )
Scientific periodization is necessary for history studies. The standards of periodization differ according to different researching subjects. The history of relationship among China, Japan and Russia(Soviet Union)during the 20th century could be divided into 7 periods.1900-1917 is the period of two powerful forces bullying the weak one ;The relationship among the three countries changed for the first time from 1917 to 1931 ;Danger of war enveloped these countries from 1931 to 1945;There had been a special relationship among the three countries from 1945 to 1949;The relationship changed again from 1949 to 1960;During the period of 1960 to 1972,the sate of friendliness and hostility went through transformation one another;The relationship tended to be normal from 1972 to 1991.