Ch'oe Mu-sŏn
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Ch'oe Mu-sŏn was a medieval Korean scientist, inventor, and military commander during the late Goryeo Dynasty and early Joseon Dynasty. Wikipedia
Born: 1325, Yeongcheon-si, South Korea
Died: 1395 (age 70 years), Haeju, North Korea
Children: Choi Hae-san
Parents: Choe Dong-soon