Cai Yong
![An illustration of Cai Yong in ''[[Sancai Tuhui]]''](https://upload.wikimedia.org/wikipedia/commons/c/cf/Cai_yong.jpg)
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}}Cai Yong (132/133 – ), courtesy name Bojie, was a Chinese astronomer, calligrapher, historian, mathematician, musician, politician, and writer of the Eastern Han dynasty. He was well-versed in calligraphy, music, mathematics and astronomy. One of his daughters, Cai Yan / Cai Wenji, was also a famous poet and musician. Provided by Wikipedia
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