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.
Hongsibao District, Wuzhong City, Ningxia, formerly known as Hongsibao Development Zone, is the second municipal district of Wuzhong City, Ningxia Hui Autonomous region. It is the main battlefield of the National large Water Control Project-Ningxia Poverty Alleviation and Yellow River Irrigation Project ("1236" Project). It is the largest ecological poverty alleviation and immigration concentration area in China. Hongsibao District of Wuzhong City was established with the approval of the State Council in September 2009. the administrative area covers an area of 2767 square kilometers. as of 2013, it has jurisdiction over 2 towns, 3 townships, 1 street, 61 administrative villages and 2 urban communities, with a total population of 179390. Among them, the Hui population accounts for 61% of the total population. Hongsibao District is located between Yanbing Mountain, Daluo Mountain and Niushou Mountain, facing Yanchi to the east, Zhongning to the west, concentric to the south, Litong District and Lingwu to the north, about 80 kilometers from east to west and 40 kilometers from north to south.