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鄭和下西洋
Between 1405 and 1433, Zhu Di, Emperor Chengzu (r. 1402–1424, 1360–1424) of the Ming dynasty (1368–1644) appointed Zheng He (1371–1433) commander of a colossal fleet to lead seven ocean expeditions departing from Suzhou to reach as far as the western Pacific and the Indian oceans.