Sunit Left Banner, a flag under the jurisdiction of Xilingol League in the Inner Mongolia Autonomous Region, is located in the central part of the Inner Mongolia Autonomous Region and the northwestern part of Xilingol League, in the north-central part of the Mongolian Plateau, with a mid-temperate semi-arid continental climate, and adjoining six banners (cities), with a total area of 34,251.7 square kilometers. As of October 2022, Sunit Left Banner has jurisdiction over 3 towns, 4 soums, and another 2 townships. As of the end of 2022, Sunit Left Banner had a resident population of 34,900 people. The word "Sunit" evolved from the name of an ancient Mongolian clan, and the Sunit Grassland was named after the tribe that came here to settle. Qing dynasty Chongde six years (1641), the Qing dynasty will Sunit department for Sunit flag, the following year was renamed Sunit left wing flag, under the Xilingol league; Republic of China thirty-four years (1945) in August, the return to Chahar province, Xilingol league; Republic of China thirty-five years (1946), Sunit left-wing flag was renamed Sunit left flag; Republic of China thirty-six years (1947), Sunit left flag with the Xilingol league by the Chahar Province to the leadership of the Inner Mongolia Autonomous Government. The main attractions of Sunit Left Banner include the Arshan Baolige Boulder Forest, Ulan Shandu Ranch, and the Engel River Wetland Park Resort, etc. On July 29, 2020, Sunit Left Banner was selected as the "Named List of National Hygienic Townships (Counties and Townships) in the 2017-2019 Cycle". On January 29, 2023, Sunit Left Banner was selected as "the sixth list of civilized cities in Inner Mongolia Autonomous Region". In 2022, Sunit Left Banner realized gross domestic product (GDP) of 4.678 billion yuan, an increase of 5.3% year-on-year; the ratio of added value of the primary, secondary and tertiary industries was 21.9:51.9:26.2; the revenue of the general public budget was 397 million yuan, an increase of 50.4% year-on-year; the investment in fixed assets increased by 12.8% year-on-year; and the disposable income per capita of urban and rural residents was 35,509 yuan, an increase of 6.6% year-on-year. with a year-on-year increase of 6.6%.