Cai Yan was a gifted female poet at the end of the Han dynasty.
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history
琰 'fine jade' is not used independently in modern Chinese. It survives chiefly in given names, most famously the Han poet 蔡琰 (Cai Wenji). It shares the 炎 phonetic with 谈 and 淡.
register
Archaic and name-only, encountered as a personal name or in classical texts, not as a common word.