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.
HuaYing, abbreviated for short, is directly under the jurisdiction of Sichuan Province and hosted by Guang'an City. It is one of the two sub-cities of Guang'an "Shuangbai" Group City Plan. It is located in the eastern part of Sichuan Basin, the western foot of the middle section of Huaying Mountain, and is the eastern gate of Sichuan Province. It is 126 kilometers away from Chongqing and 300 kilometers away from Chengdu, which is named after Huaying Mountain. Huaying is a heroic city and a red city. It is an excellent tourist city in China, one of the key counties and cities in Huanyu area of Sichuan Province, a garden city of Sichuan Province, and also one of the birthplaces of Hongyan spirit. Huadu, which was listed as the first batch of pilot counties and cities to expand power in Sichuan Province in 2007, was listed as the second batch of resource-based cities in Sichuan Province in 2009 and the only resource-based city in Sichuan Province to transform into pilot cities. In 2010, it was awarded the title of Old Revolutionary Base in Sichuan Province, and in 2012 it was listed.