The distance between east, west, north and south of China.

China's territory starts from the center of Heilongjiang in the north of Mohe River (53 30' north latitude) and ends at Zengmu shoal in the south of Nansha Islands (4 north latitude), spanning more than 49 degrees north latitude. It starts from the intersection of Heilongjiang and Wusuli River in the east (135 05' E) and reaches Pamirs (73 40' E) in the west, spanning more than 60 degrees. From south to north, from east to west, the distance is more than 5000 kilometers.