@ComradeEd@lemmygrad.ml @satori@hexbear.net Having gone through my own reading rabbit-hole on UN diplomacy in the past, I can clarify: The vote was on passing the "important question" scheme that the US first devised in 1961. Every time a motion in the UNGA was put forth to restore the UN seat to China, the US inserted a preliminary amendment to have the motion considered a "important question," which would require a supermajority rather than a simple majority for it to then pass. This blocked China's membership for 10 years until 1971. This is why the vote in the video has the US and its underlings voting in the affirmative and why the Assembly laughed, because by the US' turn to vote, it was already clear that the UNGA majority would reject the supermajority amendment and thus be able to restore China's membership.

The end came abruptly for the Taiwanese delegation. On October 26, 1971, the General Assembly narrowly rejected the “important question” resolution, which would have required a two-thirds majority to replace Taiwan with the Communist government. Anticipating the inevitable next step, the Taiwanese delegation walked out of the General Assembly moments before the lopsided vote that formally evicted them. In that instant, Chiang Kai-shek’s government lost all rights at the United Nations, including the coveted council seat. It was just as well that the Taiwanese had left. Many delegations broke into wild applause—and even dancing—as the results were announced. Finally, after twenty-five years of exclusion. Communist China would be in the inner sanctum.

Bosco, D. 2009. Five to Rule Them All: The UN Security Council and the Making of the Modern World. Oxford.