Los Angeles (US: /lɔːs ˈændʒələs/ (listen) lawss AN-jəl-əs;[a] Spanish: Los Ángeles [los ˈaŋxeles], lit. 'The Angels'), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world's most populous megacities. Los Angeles is the commercial, financial, and cultural center of Southern California. With a population of roughly 3.9 million residents within the city limits as of 2020, Los Angeles is known for its Mediterranean climate, ethnic and cultural diversity, being the home of the Hollywood film industry, and its sprawling metropolitan area. The city of Los Angeles lies in a basin in Southern California adjacent to the Pacific Ocean in the west and extending through the Santa Monica Mountains and north into the San Fernando Valley, with the city bordering the San Gabriel Valley to its east. It covers about 469 square miles (1,210 km2), and is the county seat of Los Angeles County, which is the most populous county in the United States with an estimated 9.86 million residents as of 2022.
Ziyang District, which belongs to Yiyang City, Hunan Province, is located in the north of the central city of Yiyang City, facing Changsha-Zhuzhou-Xiangtan Urban agglomeration to the east and Changde Hanshou County to the west, with a population of 423000 and an area of 680sq km. It has jurisdiction over five towns, one township, two subdistrict offices and one provincial industrial park (Changchun Economic Development District). Ziyang is an important transportation hub and material distribution center in central and northern Hunan, and it is the "key place to undertake the gradient transfer of processing trade" approved by the Ministry of Commerce. The region has formed four major industrial clusters dominated by equipment manufacturing, electronic information, light industrial textiles and agricultural products (food) processing, communications, electric power and other infrastructure have developed rapidly, and land and water transportation has formed a dense network. Ziyang District is a national ecological construction demonstration area, the national Dongting Lake Wetland Ecological Reserve, and it is also one of the two provincial counties with excellent environmental quality in Hunan Province. Guan Yunchang