The topography of Ningxia gradually inclines from southwest to northeast, with numerous hills and gullies. The terrain is divided into three major plates: the northern Yellow River irrigation area, the central arid zone and the southern mountainous area. Ningxia is located in the Yellow River system, with high terrain in the south and low terrain in the north, which shows a step-by-step decline. The whole region belongs to temperate continental arid and semi-arid climate. Ningxia Hui Autonomous Region has five prefecture-level cities (9 municipal districts, 2 county-level cities, 1 1 county). The total population of the seventh national census in 2020 is 7202654. In 2020, Ningxia will achieve a regional GDP of 392.055 billion yuan, an increase of 3.9% over 20 19.