Yu Qin
Encyclopedia
Yu Qin was a well-known Chinese geographer living in the Yuan Dynasty
Yuan Dynasty
The Yuan Dynasty , or Great Yuan Empire was a ruling dynasty founded by the Mongol leader Kublai Khan, who ruled most of present-day China, all of modern Mongolia and its surrounding areas, lasting officially from 1271 to 1368. It is considered both as a division of the Mongol Empire and as an...

. In 1319 AD, he was appointed the official of Jinan
Jinan
Jinan is the capital of Shandong province in Eastern China. The area of present-day Jinan has played an important role in the history of the region from the earliest beginnings of civilisation and has evolved into a major national administrative, economic, and transportation hub...

 to resolve the starvation problem caused by bad harvesting. He started to write the famous geography book Qi Cheng
Qi Cheng
Qi Cheng is a famous Chinese geography book written by Yu Qin while he was an official in Jinan, Shandong Province. Qi Cheng is the oldest known geography book about Shandong Province....

 (齐乘) during this period, which was the oldest known geography book about Shandong Province.
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