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The Chongtong was the name of most of the Korean gunnery used during the Joseon Dynasty. There were many different types, various improvements over the years, often including renaming. The well-known "Cheonja", "Jija", "Hyeonja", and "Hwangja" were named after the first four characters of the Thousand Character Classic in decreasing size, thus making them equivalent to Cannons A, B, C, and D.〔Turnbull, Stephen, "Fighting Ships of the Far East, Volume 2: Japan and Korea", Jan 25, 2003, p. 21.〕 ==History== Gunpowder first came to Korea in the mid 14th century, but it was not until the 1370s when Korea began its own production. Choe Museon had to reinvent gunpowder weapons in Korea, due to the Chinese refusing to share the technology with the Koreans. During the reign of Taejong of Joseon, improvements were made, and still more were made by Sejong the Great in the 1440s. During the mid 16th century the classic Cheonja, Jija, Hyeonja and Hwangja chongtong appeared. Earlier in the century, the ''bullanggi'', a breech-loading swivel gun was introduced from Portugal via China. In 1596, more improvements were made, and by this time the Seungja class of hand-cannons were phased out in favor of Japanese-style muskets and arquebuses. The Koreans called these ''jochong'' (조총/鳥銃). During the 1650s, Hendrick Hamel and others were shipwrecked on Jejudo, introducing a Dutch cannon the Koreans called the hong'ipo, and used it alongside the native Korean cannons. They were finally discontinued in the late 19th century when Joseon abolished the old-style army in favor of an army based on contemporary Western militaries. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chongtong」の詳細全文を読む スポンサード リンク
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