The "Map of Yulin" (<i>Yulin Biantu</i>) from Luo Hongxian's <i>Enlarged Atlas</i>, Vol. 2, based on the maps first drafted by Zhu Siben. Library of Congress copy of Hu Song's 1558 revision. Depicts the northern area of Shaanxi, including the Great Wall. Grid of 100×100 li (about 33×33 km or 20×20 mi).
Zhu Siben, redrafted and revised by Luo Hongxian, edited by Hu Song
1558
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