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.
Qiongzhong Li and Miao Autonomous County is one of the ethnic autonomous counties under the jurisdiction of Hainan Province. the county is located in the middle of Hainan Island, the northern foot of Wuzhishan, tropical marine monsoon climate, long summer without heat, short winter without severe cold, with an average annual temperature of 22.8 degrees Celsius. It covers an area of 2704.66 square kilometers and has jurisdiction over 10 townships, 2 county forest farms and 1 county farm. In 2012, the county population was 228000, with Li accounting for 45.63% and Miao accounting for 6.1%. The middle line of Haiyu runs through the whole territory, and the highway network spreads out in the form of radiation. it is the transportation hub of Hainan Island highway in the north-south and east-west direction. Qiongzhong is the ecological core area of Hainan, with the laudatory name of "the Heart of Hainan, the Source of the three Rivers, the Forest Kingdom, the hometown of Green Orange, and the Home of Li Miao". It has national and provincial levels such as Wuzhishan, Limu Mountain, Diaoluo Mountain, Yinggeling and so on.