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.
Yanta District is the largest core area in the central city of Xi'an, the economic and cultural center of the province, located in the Nancheng plate of Xi'an City, Shaanxi Province. There are two state-level economic development zones, Xi'an High-tech Industrial Development Zone and Qujiang New area, with a total area of 152square kilometers, 10 subdistrict offices and a resident population of 1.2311 million (2017). It is named because of the world-famous historical and cultural heritage Dayan Pagoda in the area. Yanta District is a leading strong economic area in central and western China. It is a famous commercial and scientific and educational district in China. Its total economic output exceeded 152.1 billion RMB and per capita GDP exceeded 21300 US dollars in 2017. China's top 100 urban areas ranked 29th and all ranked first in western China. It is the first comprehensive municipal district in western China and the largest economy in Xi'an.