• Dept. III
• Qun Che Nung-yao LIN Calvin Yeh Shih-Pei Chen
• The WebGIS Platform of Historical Maps of China
• LoGaRT: Local Gazetteers Research Tools

CHMap provides quick access to 4,088 land survey maps of China produced by either China’s central and provincial governments or the land survey department of the Japanese Army during the late nineteenth and the early twentieth centuries. They are the first maps that provide accurate and large-scale outlooks (1:50,000) to a wide geography of proper China. In CHMap, users can access these land survey maps digitized by Shanghai Jiao Tong University and hosted at Max Planck Institute for the History of Science, as well as those hosted at Academia Sinica.