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.
Suzhou District, which belongs to Jiuquan City, Gansu Province, is located in the northwest of Gansu Province, the east of Jiuquan City, the northern foot of Qilian Mountain and the central and western part of Hexi Corridor. the geographical coordinates are 98 °20mm east longitude, 39 °10mm north latitude, 39 °59km north latitude, bordering Gaotai County and Sunan County in the east, Qilian Mountain and Sunan County in the south, Jiayuguan City in the west, Jinta Jiashan Mountain and Jinta County in the north. It is 104km long from east to west and 84km wide from north to south, with a total area of 3353.74 square kilometers. As of 2016, Suzhou District has jurisdiction over 6 streets, 10 towns and 5 townships, with a total population of 406400, including 15 ethnic groups such as Han, Hui and Yugur. In 2011, the gross domestic product (GDP) of Suzhou District reached 15.278 billion yuan.