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.
Taierzhuang District belongs to Zaozhuang City, Shandong Province, between longitude 11723 & #39;~117 °50 & #39;, 34 °28 & #39;~34 °44 & #39;. It is located in the south of Shandong Province, at the junction of Shandong and Jiangsu, Yimeng Mountain in the east, Weishan Lake in the west, Xuzhou in the south and Qufu, the hometown of Confucius and Mencius in the north, which is the "south gate of Shandong". As of 2014, the region has a total area of 538.5 square kilometers, with five towns and one street, with a total population of 321900. Taierzhuang has a long history. Taierzhuang was formed in the Han Dynasty, developed in the Yuan Dynasty and flourished in the Ming and Qing dynasties. According to the Chronicles of Yixian County, "Taierzhuang spans canals, when the north-south channel is the best for business travel, and the residents give it to the residents. The size of the village and town is as big as Yiyi."