Fact check: The UN Charter was signed in 1945 - four years before Mao established the People's Republic of China.
The "China" that signed the UN Charter in 1945 is the Republic of China government that is now the government of Taiwan.
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Jonathan Cheng
@JChengWSJ
Lin Jian: "We congratulate the UN on the 79th anniversary of its founding…As the first country to put its signature on the UN Charter, China has all along upheld the purposes and principles of the UN Charter."
fmprc.gov.cn/eng/xw/fyrbt/l