Harqin Left wing Mongolian Autonomous County is subordinate to Chaoyang City, Liaoning Province. It is located in the west of Liaoning Province, the south of Chaoyang City, and the hilly area in the upper reaches of Daling River. It borders Chaoyang County in the east, Lingyuan City in the west, Jianchang County in the south, and Jianping County in the north. It is 200 kilometers away from Qinhuangdao. It is an important part of the Bohai Rim Economic Circle, which lies between 40 ° 47 ′ 12 ″ north latitude and 41 ° 33 ′ 53 ″ east longitude and between 119 ° 24 ′ 54 ″ and 120 ° 23 ′ 24 ″ east longitude. As of 2017, Kazuo County has jurisdiction over 3 streets, 10 towns, 9 townships, 1 farm, and a total of 190 administrative villages and 8 communities. The total area is 2240 square kilometers. In 2021, the total registered residence population of Kazuo County will be 413300.

Karaqin Left wing Mongolian Autonomous County, referred to as Kazuo, was called Lizhou in ancient times. Famous scenic spots include Dongshanzui Site, Pigeon Cave, Tiancheng Temple, Jingyan Buddhist Temple Pagoda, etc. The first batch of national agricultural sustainable development pilot demonstration areas. In November 2018, it was identified as one of the first innovative counties (cities) by the Ministry of Science and Technology. In November 2020, it was selected into the first batch of sample counties (cities and districts) of the Ministry of Water Resources to deepen the reform of small reservoir management system.

In 2021, the GDP of Kazuo County will be 10.79 billion yuan, an increase of 5.9% over the previous year at comparable prices. Among them, the added value of the primary industry is 3.92 billion yuan, and the added value of the secondary industry is 2.12 billion yuan; The added value of the tertiary industry was 4.75 billion yuan, up 6.6%.