Chao Gai is the first chieftain of Liangshan in Water Margin.
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history
晁 is not used as a common word in modern Chinese; it occurs almost only as a surname. It is an old variant of 朝 in the sense of morning, written with sun 日 over 兆 for the sound.
culture
The best-known bearer is 晁盖, the first leader of the Liangshan outlaws in the classic novel 《水浒传》.