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Because topographical work serves as a tool for national rule and as evidence of national sovereignty, the Qing court treated them with the utmost importance. In theeighteenth century, Kangxi, Yongzheng, and QianIong, three diligent and conscientious emperors, personally directed and planned empire-wide topographical surveys.During the process of surveying and charting China, Western missionaries provedto be of great benefit to this effort. They contributed Western knowledge of astronomyand geography, along with the most advanced survey techniques, and, in close cooperation with officials of the Qing court, accomplished the formidable task of surveying thetotal Land area of the empire. This was not only a historic undertaking, but also an outstanding contribution to the development of world cartography.
Because topographical work serves as a tool for national rule and as evidence of national sovereignty, the Qing court treated them with the utmost importance. In the eighteenth century, Kangxi, Yongzheng, and QianIong, three diligent and conscientious emperors, personally directed and planned empire- They made Western knowledge of astronomy and geography, along with the most advanced survey techniques, and, in close cooperation with officials of the Qing. court, accomplished the formidable task of surveying the total land area of the empire. This was not only a historic undertaking, but also an outstanding contribution to the development of world cartography.