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.
Zhanyi District belongs to Qujing City, Yunnan Province. It is located in longitude 103 °29 "104 °14" east and latitude 25 °31 "26 °06 'north. It is located in the east of Yunnan Province and in the middle of Qujing City. Since ancient times, it has been known as "the key to entering Yunnan", "the gateway to Yunnan" and "the first state in Yunnan". With a total area of 2910 square kilometers, it belongs to the low-latitude plateau monsoon climate zone, with an average elevation of 2000 meters, annual rainfall of 1000 mm and an annual average temperature of 14 ℃. It has jurisdiction over 4 streets, 2 towns and 5 townships, with a total population of 431058 (2010), of which 28000 are ethnic minorities. The district government is stationed on Xiping Street. Zhanyi District is an old revolutionary base in Yunnan Province, an important tobacco base and a medicinal flower base in China. In 2011, the gross domestic product of Zhanyi District was 11.7 billion yuan and the financial revenue was 12.