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.
Tacheng area, one of the five areas of Xinjiang Uygur Autonomous region, is under the jurisdiction of Yili Kazakh Autonomous Prefecture and is based in Tacheng. Located in the northwest of Xinjiang Uygur Autonomous region, West Junggar Mountain in the north, Tianshan Mountain in the south and Junggar Basin in the middle and east are located in the northwest of Xinjiang Uygur Autonomous region. the whole region covers an area of 105400 square kilometers and has jurisdiction over 2 cities, 4 counties and 1 autonomous county with a total population of 935600 in 2017. Historically, Tacheng area was an important passage for China to Central Asia. In Tacheng area, four ports to the west, three ports to the north, roads and railways to the north, China-Kazakhstan gas pipeline, Fenghuang-Wusu-Yili 750 transmission line run through the whole territory, and the international transportation of the four transnational railways, including Yuxin Europe, must pass through Wusu City and Shawan County; Kuibei Railway