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.
Yongkang, known as Lizhou in ancient times, is in charge of county-level cities in Jinhua City, Zhejiang Province, which is located in the low mountain and hilly areas in the middle of Zhejiang Province. No. 15 Jincheng Road, Dongcheng Street, Municipal people's Government. According to legend, in the eighth year of Wu Chiwu of the three Kingdoms (AD 245), Sun Quan's mother came here for incense because of illness and prayed for "everlasting health." when his wife recovered from her illness, Sun Quan was delighted, so he gave it the name "Yongkang" and established it as a county alone. He was promoted to a state in the Tang Dynasty. In 1992, with the approval of the State Council, counties were withdrawn and cities were established. It has jurisdiction over 10 towns, 4 streets and 1 economic development zone. In June 2017, Yongkang City was named as a national health city. In November 2018, it was selected into the top 100 industrial counties (cities) and Chinese cities in the top 100 in the overall well-off index in 2018. In December 2018, it was selected as one of the top 100 comprehensive competitiveness of county economy in China.