Ruili City, called "Mengmao" in ancient times, is located in the west of Yunnan Province. It is the birthplace of Dai culture and one of the regions with the earliest opening history, the best opening foundation and the highest opening degree in the southwest frontier of China. Ruili covers an area of 944.75 square kilometers and governs 1 street, 3 towns and 2 townships. In addition, it also manages two township units.

Ruili has a permanent population of 226,639; Ethnic minorities mainly include Dai, Jingpo, De 'ang, Lisu and Achang. Mammoth Street, the government residence. Ruili is named after the implication of "auspicious beauty". In the 21st year of the Republic of China (1932), Ruili County was established on 1952, and on June 26th, 1992, Ruili County was changed to Ruili City.

Introduction of Ruili landform;

The topography of Ruili City is like a bag, and the landform has the characteristics of a wide valley basin. It is mainly composed of one mountain (Huyongshan-Panshan-Erdashan), one dam (Ruili Dam), one river (Ruili River) and one river (Nanwan River). The terrain is high in the northeast and low in the southwest, with an inclination of about 10 degree. The highest elevation in Ruili City is 20 19.2m, the lowest elevation is 743.2m, the relative elevation difference is 1276m, and the ratio of mountain to dam is 3: 1.

The shapes of basins and mountains in Ruili City are the same as those of valleys in Ruili City, but the structures are different. Ruili River runs through the whole dam from north to south and from east to west. The river moves backward and develops in a wide basin. There are many oxbow lakes on the old river, swamps in the dam and floodplains along the river.

Reference: Baidu Encyclopedia-Ruili City