The mouth of the Yellow River in northern Nanzhili (now Jiangsu), the 1st "Grand Canal Map" (<i>Caoyun Tu</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. Woodblock print. 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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