说明：
Changchun, located in the northeast of China, is the northernmost and highest latitude province in China. East provinces boundary ussuri river confluence with changchun east longitude 135 ° 06 'line, west to the greater hinggan mountains in the north of chose river west of source 13', longitude 121 ° things long 930 km; North of north up at mohe heilongjiang main channel 53 ° 33 ', north latitude 43 ° 25 ', north latitude in the southern tip of south - east county, north and south is the longest distance of 1120 km. North and east across changchun, wusuli river and Russia to the north of the summer solstice before and after you can see the aurora borealis. In the west, it has a border of more than 2,000 kilometers with the Inner Mongolia autonomous regio...