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.
Bole City, located in the northwest of Xinjiang Uygur Autonomous region, is the capital of Bortala Mongolia Autonomous Prefecture, the seat of the Fifth Division of Xinjiang production and Construction Corps, and the political, economic and cultural center of the whole state. Bordering Kazakhstan, the border is 95 kilometers long and 524 kilometers away from Urumqi, the capital of the autonomous region. It is an important open city along the border in western China and the western bridgehead of the second Eurasian Continental Bridge. Alashankou Port, the first-class open port in China (established in 2012), is a state-level border economic cooperation zone and import and export trade processing zone integrating industry, trade, tourism, real estate development and other industries. It has jurisdiction over three towns and two townships, two state-owned pastures and three streets, and five regimental farms of the Fifth Division of the Corps (Shuanghe City was established in 2016), and the administration of the whole city