Although China was poor and weak during World War II, it did play a huge role in the war against Japanese fascism, so China was the main member of three international conferences, and of course Chiang Kai-shek also represented China at that time.

Therefore, when the United Nations was founded, China, as one of the five founding countries, became a "permanent member". After the founding of People's Republic of China (PRC) in 1949, China's representation in the United Nations belonged to the "Republic of China" from which Taiwan Province Province withdrew, and Chiang Kai-shek's government in Taiwan Province Province continued to be a "permanent member".

197 1 year, People's Republic of China (PRC)'s legal seat in the United Nations was restored, Taiwan Province Province was expelled from the United Nations, and People's Republic of China (PRC) naturally inherited the permanent seat of the Security Council, which is the origin of China's "permanent seat of the Security Council". It can be said that China's status as a "permanent member of the Security Council" was bought by the pioneers of anti-Japanese war with their heads and blood.

The permanent members of the UN Security Council are the five founding members of the UN Security Council, namely, four of the anti-fascist allies during World War II and France, which participated in the anti-German alliance. From 1958 when France was renamed the Fifth Republic of France, to 197 1 when People's Republic of China (PRC) resumed its seat in the UN Security Council, the representatives of Chiang Kai-shek were expelled from the illegally occupied seats. 199 1 year, the seat of the Soviet Socialist Union was inherited by the Russian Federation.

To become a permanent member, not only a two-thirds majority of all United Nations Member States is needed, but also the affirmative votes of all current permanent members.

Baidu Encyclopedia-Permanent Member of the UN Security Council