Abstract:The Huangcheng gongdian yashu tu (Map of government offices in the imperial palace) produced in 1669 during the Kangxi period is the earliest known imperially commissioned map that depicts the architectural layout of the imperial palace in the historical capital of Beijing. In 1934, when Liu Dunzhen found it in the (Peking) National Library of China, he noticed that the map was a valuable, rare resource of information about the transition in architectural layout from the Ming dynasty to the Qing dynasty. However, since November 1935, the map was moved several times from one place to another due to the Second World War and war-related events, until it reappeared in an exhibition of the Palace Museum in Taipei in 2008. In 2013, it was finally possible to launch a comprehensive study of the map, because Tianjin University received a high-quality replica showing many details. In order to promote future research, this paper introduces and interprets the fifindings of previous studies (discussing issues of discovery, circulation, and different interpretation theories) and suggests a new approach to the understanding of the map.