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.
Ganquan County belongs to the hilly and gully zone of the Loess Plateau in northern Shaanxi Province, which is located in the middle of Yan'an City, Shaanxi Province, with a semi-humid inland monsoon climate. The total area is 2284.7 square kilometers, the total area of cultivated land in the county is 609000 mu, and the forest and grass coverage rate is 78.4%, of which the forest coverage rate is 50.5%. Ganquan gets its name because of the spring water in the foothills of Shenlin, 5 kilometers southwest of the city, which is known as "the hometown of beautiful water". There is a history of the Western Zhou Dynasty, Qin home Diaoyin County, Northern Wei early home Linzhen County, Tang Wude first year home Fulu County, Tianbao first year changed to Ganquan County. Places of interest include the site of Qin Zhidao, the "Meishui Spring" given by Emperor Yang of the Sui Dynasty, the White Deer Temple built in the Tang Dynasty, the Millennium Ginkgo Tree, the ancient tombs of the Song Dynasty, and so on. In March 2019, it was listed as the first batch of revolutionary cultural relics protection and utilization district and county list.