San Jose,[A] officially San José (/ˌsæn hoʊˈzeɪ, -ˈseɪ/; Spanish: [saŋ xoˈse]; Spanish for 'Saint Joseph'),[B] is a major city in the U.S. state of California that is the cultural, financial, and political center of Silicon Valley and largest city in Northern California by both population and area. With a 2020 population of 1,013,240, it is the most populous city in both the Bay Area and the San Jose-San Francisco-Oakland Combined Statistical Area, which contain 7.7 million and 9.7 million people respectively, the third-most populous city in California (after Los Angeles and San Diego and ahead of San Francisco), and the tenth-most populous in the United States. Located in the center of the Santa Clara Valley on the southern shore of San Francisco Bay, San Jose covers an area of 179.97 sq mi (466.1 km2). San Jose is the county seat of Santa Clara County and the main component of the San Jose–Sunnyvale–Santa Clara Metropolitan Statistical Area, with an estimated population of around two million residents in 2018.
Dingxi is a prefecture-level city under the jurisdiction of Gansu Province, located in central Gansu, commonly known as "Longzhong"; it is located in the confluence area of the Loess Plateau and West Qinling Mountains, with large ups and downs, vertical and horizontal mountains and different shapes; its climate type belongs to the south temperate zone semi-humid-mid-temperate zone semi-arid zone, the continental monsoon climate is obvious; the city's total area is 20330 square kilometers, under the jurisdiction of 1 district, 6 counties; 2018 resident population 2.8217 million. Dingxi is a national summer resort observation city, with more than 60 tourist attractions and tourist spots. Weiheyuan, Guiqing Mountain, Shade Mountain, Langdu Wetland grassland and Taohe tourist promenade are all places for summer leisure. Dingxi not only gave birth to Li culture, but also the intersection of prehistoric cultures such as Majiayao, Qijia, Siwa, Xindian and other prehistoric cultures and important calligraphy and painting in the country.