What is so special about December 31st in history?

  On December 31, 1984, the Chinese Antarctic Expedition Team held a groundbreaking ceremony for the Great Wall Scientific Research Station. The first five-star red flag was floated on George Island in Antarctica.

  On December 31, 1600, the notorious British East India Company was established.

  Today is the last day of 2021. Do you have any gains or regrets?

Which year's December 31st has a special meaning to you?

What unforgettable thing happened?

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