San Diego (/ˌsæn diˈeɪɡoʊ/ SAN dee-AY-goh, Spanish: [san ˈdjeɣo]; Spanish for 'Saint Didacus') is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States and the seat of San Diego County, the fifth most populous county in the United States, with 3,338,330 estimated residents as of 2019. The city is known for its mild year-round climate, natural deep-water harbor, extensive beaches and parks, long association with the United States Navy, and recent emergence as a healthcare and biotechnology development center. San Diego is the second largest city in the state of California, after Los Angeles.
Karamay City, one of the four prefecture-level cities in Xinjiang Uygur Autonomous region, is resident in Karamay District. It is an important national petroleum and petrochemical base and a new type of industrialized city built in Xinjiang. Karamay is located in the west of Junggar Basin, the central area of Eurasia and Pan-Central Asia, and is the gathering area of the world's petroleum and petrochemical industry. Karamay, the Uyghur language means "black oil". Karamay is a city named after oil, named after a group of natural asphalt hills in the northeast corner of the city. Karamay is the first large oil field to be explored and developed since the founding of New China. It was founded in 1958. In 2002, its crude oil output exceeded 10 million tons, making it the first large oil field in western China with a crude oil output of more than 10 million tons. Kramer, December 20, 2011