The topography of China is complex, high in the west and low-lying in the east. Mountains, hills and plateaus account for 65 percent of the country's land area.
China also abounds in rivers and lakes.
The total length of rivers runs to 220,000 km. More than 5,000 rivers have a catchment area exceeding 100 square km. More than 2,800 lakes are more than one square km in size, among which 13 have a water surface of more than 1,000 square km.