Yichun

Yichun was named after the Yichun River (伊春河), which is a small tributary of Tangwang River (汤旺河). The word Yichun means "nine" in Mongolian language. During the Shang dynasty Yichun was populated by the Sushen (肃慎). Before the Tang dynasty, the region was inhabited by several nomad tribes in the northeastern border area of China including Sushen and Donghu. During the Qing dynasty, Yichun was under the administration of Qiqihar and Hulan's Deputy Lieutenant-General (Fudutong) before it became a minor town under Tangyuan County's jurisdiction in the 1890s. The region's real development began after the establishment of Manchukuo after Japanese force seized Manchuria in 1932. In November 1941, a railway from Suihua to Jiamusi was built before its branch was extended to today's Yichun district from Nancha in July 1942. …

Yichun is located in the northeast part of Heilongjiang with a border length of 2,495 km (1,550 mi), part of which faces Russia across the Amur River. The Lesser Khingan Mountains cross the city. The total administrative area is 33,000 km2 (13,000 sq mi). The channels and valleys are densely covered with trees and grasslands. There are 702 rivers, all of which are in the Amur and Songhua River drainage basins; the total water pondage is 10.2 billion cubic metres (360 billion cubic feet). The Tangwanghe River is the main river. Yichun has a monsoon-influenced, hemiboreal climate (Köppen Dwb), with long, bitterly cold, but very dry winters, and very warm, humid summers. With an annual mean temperature of 1.8 °C (35.2 °F), it is among the coldest Chinese cities, and diurnal temperature variation tends to be large, especially in winter and spring. …

The city's GDP topped RMB 20.24 billion in 2010, featuring a growth of 15.7% over the previous year. In 2010, value-added industrial output generated by enterprises with designated size or above rose 29.3% to RMB 7.12 billion. In 2010, the foreign trade value of Yichun totaled US$302.23 million, up 36.3% year on year. Wood processing and metallurgy are the main industries in Yichun. In 2010, value-added industrial output from wood processing increased 34% to RMB 2.01 billion, while that from metallurgy rose 39.2% to RMB 2.2 billion, accounting for 33.6% of the industrial sector's total. These two industries accounted for 91% of Yichun's total value-added industrial output according to the statistics in 2009.