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.
Honggu District belongs to Lanzhou City, Gansu Province, located in the far suburbs of Lanzhou City, located in the middle of Gansu Province, was established in 1960, named because of the Honggu River east of Xiangtang Gorge, the geographical coordinates are 102 °50mm east longitude 102 °54' and 36 °19mm Met 36 °21' north, Xigu District to the east, Datong River to the west, Huangshui River to the south and Qinghai Minhe Hui Autonomous County and Yongjing County to the south, the loess mountains in the north adjoining Yongdeng County. It is located in the geometric center of the two provincial capitals of Lanzhou and Xining. In 2014, Honggu District has a total area of 567.66 square kilometers, with a total population of 150000 (2014), and has jurisdiction over three streets, three towns and one township. In 2014, Honggu District achieved a GDP of 10.528 billion yuan, an increase of 15.5% over 2013.