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.
Jiangzi County, which belongs to Xigaze City, Tibet Autonomous region, is located in the south of Tibet, the east of Xigaze City and the upper reaches of Nianchu River. Jiangzi is not only one of the famous historical and cultural cities in China, but also a new tourist town. In 2006, the total population of Jiangzi County was 67000, and the domestic residents were mainly Tibetans, accounting for 98%. Other ethnic groups include Han nationality, Hui nationality and so on. In 2008, Jiangzi County had jurisdiction over 1 town, 18 townships, 151 villages and 3 neighborhood committees. The county government is stationed in Jiangzi town. The total area is 3771 square kilometers. In 2013, the GDP of Jiangzi County was 1.316 billion yuan, an increase of 201% over 2004. On September 25, 2018, he won the honorary title of "2018 e-commerce into rural comprehensive demonstration county" of the Ministry of Commerce.