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.
Liquan County, which belongs to Xianyang City, Shaanxi Province, is located in the middle of Guanzhong Plain, Jingyang in the east, Qianxian County in the west, Xinping and Xianyang in the south, Chunhua and Yongshou in the north. Between longitude 108o 17040 "- 108o 41m 46" east and latitude 34o 20050 "- 34o 500002" north, with a total area of 1018 square kilometres. Liquan County has been established for more than 2200 years, with 21 ancient cultural sites and 5 ancient buildings, which is one of the 18 key cultural relics tourism counties in Shaanxi Province. Tang Taizong Li Shimin Zhao Mausoleum covers an area of 300000 mu and is buried with 209. it is the largest royal mausoleum in the world. Zhaoling Museum has a collection of more than 8000 cultural relics. Zhaoling Liujun is famous at home and abroad. In 2018, Liquan County has jurisdiction over 1 street, 11 towns and permanent residents.