Geographer Yu Qin ( 1284 -- 1333 ) also served as an official in Jinan .
Geographer Yu Qin ( 1284 -- 1333 ) also authored his geography book Qi Cheng there .
Geographer Yu Qin ( 1284 -- 1333 ) also served as an official in Jinan and authored his geography book Qi Cheng there .