this is the most important things of chinese history，差不多吧
This is(was) one of the most important(significant/crucial) events in modern Chinese history.
This is one of the most important events in modern history hina.
这是中国现代史上最重要的事件之一
This is one of the most important events in the modern history of China
满意请采纳,谢谢
This is one of the most important events in the modern history of China.
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