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.
Pinghe County (ancient Pinghe County, Zhangzhou Capital), under the jurisdiction of Zhangzhou City, Fujian Province, is located in the southwest of Zhangzhou, connected with Fujian and Guangdong provinces and eight counties, known as the "thoroughfare of eight counties". There are Fuzhao Expressway, Yunping Expressway (under construction), 207 Provincial Highway, 309 Provincial Highway and other trunk lines. In ancient times, Pinghe was the city of Yangzhou, Zhou was the land of seven Min, and Ming Zhengde bought a county in the thirteenth year of Ming Zhengde (1518), meaning "Keping and human harmony". The key hometown of overseas Chinese and the ancestral place of Taiwan compatriots in Fujian Province is not only an economically underdeveloped county, but also a coastal economic open county; Pinghe County is also one of the key hometown of overseas Chinese in Fujian Province, but also one of the important ancestral places of Taiwan compatriots; the former central Soviet area county and the province's key old base county. Pinghe County has an area of 2328.6 square kilometers, ranking first in Zhangzhou. Under the jurisdiction of 16 townships (farms), 240