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.
Yongning County, which belongs to Yinchuan City, is located in the middle of the Yellow River diversion Irrigation area of Yinchuan Plain in Ningxia, facing the Yellow River to the east and Helan Mountain to the west. It is a suburban county of Yinchuan, the capital of Ningxia Hui Autonomous region, and is located to the south of Yinchuan City. It has jurisdiction over 5 towns, 1 township, 1 street and 2 state-owned farms, with a total area of 934 square kilometers and a total population of 230957 (2013). The government is stationed in Yang Wo Street. The Najia Mosque, the Great Wall of the Ming Dynasty, Li Jun Pagoda and other monuments are key cultural relics protection units in Ningxia Hui Autonomous region. In 2012, Yongning County completed a regional GDP of 7.645 billion yuan and local revenue of 1.362 billion yuan. In October 2017, Yongning County was named the National Garden County by the Ministry of Housing and Construction. In November 2017, Yongning County was awarded the "Top Ten quality Leisure Counties of 2017 in China".