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.
Guoluo Tibetan Autonomous Prefecture is an autonomous prefecture under the jurisdiction of Qinghai Province. it is located in the southeast of Qinghai Province in China, facing Gannan Prefecture and Huangnan Prefecture to the east, Aba Autonomous Prefecture and Ganzi Prefecture to the south, Yushu Prefecture to the west and Haixi Prefecture and Hainan Prefecture to the north; all are above 4200 meters above sea level, with a continental climate of the plateau. The state has a total area of 76400 square kilometers and has jurisdiction over six counties with a total population of 205700 in 2017. There are Animaqing Peak and Nianbaoyu Peak in Guoluo Tibetan Autonomous Prefecture; Zaling Lake and Eling Lake, which are called Baihai Shenhu Lake in ancient times, and the historical story of Tibetan-Han marriage; there are famous temples, ancient temples and cultural landscapes such as Laga, Baiyu, Chalang and so on. Because of its special geographical location and natural environment, the whole territory of Autonomous Prefecture is listed in the ── "Sanjiangyuan" Nature Reserve, the largest nature reserve in the country. two hundred and one