Sichuan Province is located in the southwest hinterland of China, with an east longitude of 97 21'-108 33' and a north latitude of 26 03'-3419'. Located in the upper reaches of the Yangtze River, it is 1075 km long from east to west and 92 1 km wide from north to south. It borders Shaanxi, Gansu and Qinghai in the north, Yunnan and Guizhou in the south, Chongqing in the east and Tibet in the west, with a total of 7 provinces (autonomous regions and municipalities). It is an important intersection of southwest, northwest and central regions, and it is an important intersection and transportation corridor to undertake South China and Central China, connect southwest and northwest, and communicate with Central Asia, South Asia and Southeast Asia.
Jinan is located in the central and western Shandong Province, with Mount Tai in the south, the Yellow River in the north and mountains and rivers in the back. It borders Liaocheng in the southwest, Dezhou and Binzhou in the north, Zibo in the east and Tai 'an and Laiwu in the south. Jinan is located at 36 40 ′ north latitude and117 00 ′ east longitude, with Mount Tai in the south and the Yellow River in the north. Located at the junction of hilly areas in central and southern Shandong and alluvial plain in northwest Shandong, the terrain is high in the south and low in the north.