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.
Dachuan District, under the jurisdiction of Dazhou City, Sichuan Province, is located in the south of the main urban area of Dazhou City, and is located in the connecting zone of parallel ridges and valleys in the east of Sichuan Basin, hilly areas in the middle of the basin and low mountain areas around the basin. The general trend of topography is high in the northwest and low in the southeast, belonging to the mid-subtropical monsoon humid climate type; it has jurisdiction over 2 streets, 29 towns and 25 townships, with a total area of 2245 square kilometers, with a total population of 1.118 million at the end of 2017. Dachuan District has a long history and profound cultural heritage. There are a large number of historical celebrities, such as Chun Shenjun, one of the four princes of the warring States, Sima Yuan Zhen of Tongzhou in the Tang Dynasty, Wei Chengfang of the Ministry of officials in the Ming Dynasty, Tang Zhen, an outstanding thinker in the Qing Dynasty, and so on. Unique location and convenient transportation. Dachuan, as the joint of Sichuan, Chongqing, Hubei and Shaanxi, is located in the radiation center of the four major cities of Chengdu, Chongqing, Xi'an and Wuhan.