You should learn more about history instead of denying historical facts. The PRC normalized diplomatic relationships with the US in 1972 after Nixon visited mainland China. China and Japan also normalized diplomatic relationships in 1972.
So what if Mao Tse Tung established the PRC in 1949? Before 1972, it was Chiang Kai Shek's ROC that represented China.
Whatever Mao Tse Tung might have said about Diaoyu islands before 1972 was not relevant at all.
I said this before, but you pretended not to see it, which is funny.
Why did you keep on posting irrelevant stuff?!!
Before 1972 it was Chiang Kai Shek's ROC that represented China. After 1972 it was the PRC that represented China. The PRC normalized diplomatic relationships with the US in 1972 after Richard Nixon visited mainland China. China and Japan also normalized diplomatic relationships in 1972. The whole world knows about this. Which part you don't understand?
Chiang Kai Shek went to Taiwan, but so what? Until 1972, countries like the US and Japan, continued to recognize the ROC government in Taiwan, as the government of the whole of China, including mainland China.
In December 1971, the Chinese and Japanese trade liaison offices began to discuss the possibility of restoring diplomatic trade relations, and in July 1972, Kakuei Tanaka succeeded Eisaku Satō as a new Japanese Prime Minister. Tanaka assumed a normalization of the Sino-Japanese relations. Furthermore, the 1972 Nixon visit to China encouraged the normalization process. His visit to Beijing culminated in the signing a joint statement on September 29, 1972. It established diplomatic relations between Japan and the PRC.