of Rehe Province after Chengde and Chaoyang. After Operation August Storm, the Soviet-Mongolian Cavalry-Mechanized Group entered Chifeng. After Rehe Province was rendered defunct in 1955, Chifeng was placed administratively under the newly established Inner Mongolia Autonomous Region under CCP rule, whose provincial seat was previously at Ulanhot and transferred to Zhangjiakou and then Hohhot in the 1950s. In the 1970s, going by the name Juud League, Chifeng was under the administration of Liaoning province. After 1979, Chifeng was under Inner Mongolian rule, and Juud League was dissolved on October 10, 1983. Geography Chifeng is situated along the upper reaches of the Xiliao River. Within its area are the southwesternmost extension of the Greater Khingan, the Inner Mongolia Plateau as well as the Xiliao River Plain, and finally the northernmost extent of the Yan Mountains. Bordering prefecture-level divisions are Tongliao to the northeast, Chaoyang (Liaoning) to the southeast, Chengde (Hebei) to the south, and the Xilingol League and to the west. From north to south Chifeng City stretches , while from east to west it stretches . Elevations decrease from a high of in the west to less than in the east. Climate Chifeng has a four-season, monsoon-influenced, continental semi-arid climate (Köppen BSk), with long, cold, windy, but dry winters, and hot, humid summers. Monthly mean temperatures range from in January to in July, with an annual mean of . Nearly half of the year's rainfall occurs in July and August, and even then dry and sunny weather dominates the city. With monthly percent possible sunshine ranging from 55% in July to 71% in January and February, sunshine is abundant year-round, and the city receives 2,866 hours of bright sunshine annually, about 65% of the possible total. Administrative divisions Chifeng has three districts, two counties and seven banners: Demographics In 2004, Chifeng had 4,435,737 inhabitants (49.14 per km2). Economy During the period of "the 10th Five-Year Plan", Chifeng conducted the strategy of "found the municipality by ecology, strengthen the municipality by industry, prosper the municipality by science and education", by strengthening the development of resources, and seizing the historic opportunity of Western Development. Following the strategy, Chifeng began tightening up ecological and infrastructure construction, actively promoting the process of agricultural and animal husbandry industrialization, industrialization and urbanization, greatly encouraging the development of service industry and county-level economy, trying to expand the general economy volume, increasing industry level, and enhancing the core