Mao Kun Map
Mao Kun map, usually referred to in modern Chinese sources as Zheng He's Navigation Map (traditional Chinese: 鄭和航海圖; simplified Chinese: 郑和航海图; pinyin: Zhèng Hé hánghǎi tú), is a set of navigation charts published in the Ming dynasty military treatise Wubei Zhi. The book was…