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.
Machun District, which belongs to Jiaozuo City, Henan Province, is located in the northwest of Henan Province and northeast of Jiaozuo City. Taihang in the north and the Yellow River in the south. Ma Village has a total area of 122 square kilometers. Among them, the area of cultivated land is 6133.33 hectares. The total population is 140000 (at the end of 2012), of which the rural population is 68000, with a natural population growth rate of 4.46 ‰. In 2013, the gross domestic product of Macun area reached 1.33 billion yuan. Machun District has more than 10 places of interest, of which the Zhaozhanggong site is a Longshan cultural site and the Guicheng village site is a late ancient Yangshao cultural site, all of which are provincial cultural relics protection units.