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.
Langfang, a prefecture-level city of Hebei Province, is located in the east-central part of Hebei Province, facing the capital Beijing in the north, bordering Tianjin in the east, Cangzhou in the south and Baoding in the west. Most of Langfang is located in the depression area due to the influence of geological structure; it is located in the middle latitudes and belongs to the warm temperate continental monsoon climate; it is located in the core of Beijing-Tianjin-Hebei urban agglomeration, around the hinterland of Bohai Sea. Langfang has jurisdiction over two districts, two county-level cities and six counties, with a total area of 6429 square kilometers and an urban area of 54 square kilometers. The registered population is 4.795 million in 2018. Langfang City is located in the central and eastern part of the North China Plain and the central part of Hebei Province. Langfang territory starts from the hilly area at the southern foot of Yanshan in the north and reaches the Heilonggang basin in the south. Langfang City is located in the middle latitudes, is a warm temperate continental monsoon climate, four distinct seasons. Langfang City is located in the middle and lower reaches of the Haihe River Basin.