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.
Lintao County, known as Didao in ancient times, belongs to Dingxi City, Gansu Province, and gets its name because of the Tao River in the territory. Lintao County is located in the middle of Gansu Province and the west of Dingxi City. It is located in the confluence zone of the Loess Plateau and the Qinghai-Tibet Plateau. Tao River, the largest tributary in the upper reaches of the Yellow River, passes through the city. As of October 2018, the county has a total area of 2851 square kilometers and a total population of 552900. There are 21 ethnic groups, including Han, Hui and Dongxiang, under the jurisdiction of 12 towns and 6 townships, with the county government stationed in Taoyang Town. Lintao has been a famous city in the northwest and an important town in Longyou since ancient times. it is located on the main road of the ancient Silk Road and is one of the important birthplaces of the ancient culture of the Yellow River. Since the establishment of Didao County in the 18th year of King Zhou'an (384 BC) and the establishment of Longxi County in the 27th year of King Zhao of Qin Dynasty (280 BC), it has been a county, state, state, government and county government.