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.
Haining, a county-level city under the jurisdiction of Zhejiang Province, hosted by Jiaxing City, is located in the south wing of China's Yangtze River Delta, northern Zhejiang Province, Haiyan County in the east, Qiantang River in the south, across the river from Shangyu District in Shaoxing and Xiaoshan District in Hangzhou. Xiasha, Yuhang District and Jianggan District of Hangzhou, Tongxiang City and Xiuzhou District of Jiaxing in the north. It is 100 kilometers from Shanghai to the east, Hangzhou to the west and Qiantang River to the south. In 1986, the county was removed and the city was established. The name Haining was first seen in the second year of Yongding, Emperor Chen Wudi of the Southern Dynasty (558), implying the meaning of "serenity of the sea flood". Its scenic spot "Qianjiang surge" has been popular since the Tang and Song dynasties and is well-known at home and abroad. "on August 18, there is nothing spectacular in the world". It still attracts guests from all directions and sees the wonder of the tide. Haining City has a long history, a large number of celebrities from all walks of life, is Li Shanlan, Wang Guowei,.