Answer: Answer: Yinchuan is the prefecture level city and capital of Ningxia Hui Autonomous Region, so Yinchuan belongs to Ningxia Hui Autonomous Region, not to any city or district. At the beginning of the founding of the People's Republic of China, Yinchuan was still the capital of Ningxia. In 1954, the organizational system of Ningxia Province was abolished, and Yinchuan City was the location of Yinchuan Special Administration of Gansu Province. In October 1958, the Ningxia Hui Autonomous Region was established. Yinchuan City is the capital of the autonomous region and the political, economic and cultural center of the autonomous region. Yinchuan borders Yanchi County, Wuzhong City in the east, Helan Mountain in the west, Alxa Left Banner, Alxa League, Inner Mongolia Autonomous Region, Litong District, Wuzhong City, Qingtongxia City in the south, Pingluo County, Shizuishan City in the north, and Otuoqian Banner, Ordos City, Inner Mongolia Autonomous Region (bounded by the Ming Great Wall). The terrain of Yinchuan urban area is divided into two parts: mountain and plain. It is higher in the west and south, and lower in the north and east, with a slight southwest northeast tilt. The landform types are diverse. From west to east, it can be divided into Helan Mountain, inclined plain in front of proluvial fan, proluvial alluvial plain, alluvial lacustrine plain, valley plain, flood plain, etc. The altitude is between 1010m and 1150m, the ground slope is about 2 ‰, and the soil layer is thick. Helan Mountain in the west of Yinchuan is a stony middle high mountain, trending north by east. The total length is about 150 kilometers, and the width is 20 kilometers to 30 kilometers. The highest peak is 3556 meters above sea level, which is a natural barrier to prevent the northwest cold air and sandstorm from driving straight into Yinchuan. Helan Mountain is nearly 70 kilometers in Yinchuan City, covering an area of 58800 hectares. The mountain is high and steep, imposing. Yinchuan City and its counties (cities) are located in temperate continental climate. The main climatic characteristics are: four distinct seasons, late spring and short summer, early autumn and long winter, large temperature difference between day and night, scarce rain and snow, strong evaporation, dry climate, strong wind and sand, etc. The annual average temperature is about 8.5 ℃, and the annual average sunshine hours are 2800-3000 hours. It is one of the regions with the largest solar radiation and sunshine hours in China. The annual average precipitation is about 200 mm, and the frost free period is about 185 days.