Yingya Shenglan in the context of "Xingcha Shenglan"

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 compiled by Mao Yuanyi [zh] in 1621 and published in 1628; the name of the map refers to his grandfather Mao Kun (Chinese: 茅坤; pinyin: Máo Kūn) from whose library the map is likely to have originated. The map is often regarded as a surviving document from the expeditions of Zheng He in addition to accounts written by Zheng's officers, such as Yingya Shenglan by Ma Huan and Xingcha Shenglan by Fei Xin. It is the earliest known Chinese map to give an adequate representation of Southern Asia, Persia, Arabia and East Africa.

Ma Huan (simplified Chinese: 马欢; traditional Chinese: 馬歡; pinyin: Mǎ Huān, Xiao'erjing: ﻣَﺎ ﺧُﻮًا) (c. 1380–1460), courtesy name Zongdao (Chinese: 宗道; pinyin: Zōngdào), pen name Mountain-woodcutter (會稽山樵), was a Chinese explorer, translator, and travel writer who accompanied Admiral Zheng He on three of his seven expeditions to the Western Oceans. Ma was a Muslim and was born in Zhejiang's Kuaiji Commandery, an area within the modern borders of Shaoxing. He knew several Classical Chinese and Buddhist texts. He learned Arabic to be able to translate.