Nanjing is an important central city in eastern China, an important scientific research and education base and comprehensive transportation hub in China. It is the only mega-city in the Yangtze River Delta, an important gateway city for the development of the central and western regions driven by the Yangtze River Delta radiation, the first batch of national historical and cultural cities and national key scenic tourist cities.
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Nanjing is known as the "natural geological museum", where various geomorphic units such as floodplain of the Yangtze River, water-rich soft soil, hills and karst coexist. Nanjing belongs to the hilly area of Ningzhenyang, mainly with low mountains and gentle hills. Low mountains account for 3.5% of the total land area, hills account for 4.3%, hills account for 53%, and plains, depressions, rivers and lakes account for 39.2%.
Ningzhen Mountain Range and Laoshan Mountain in the north of the Yangtze River run through the middle of the city. There are Hengshan Mountain and Donglu Mountain in the south, which are located in the southern boundary of the hilly area of Qinhuai River Basin. Nanjing's plane position is long from north to south and narrow from east to west, forming a positive north-south direction; The straight-line distance between north and south is 150km, the middle is 50-70km wide from east to west, and the north and south ends are about 30km wide from east to west. The southern part is a landform complex composed of low mountains, hills, valley plains, lakeside plains and rivers along the river.
Nanjing municipal government-city profile