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.
Longxi County is located in the southeast of Gansu Province, in the middle of Dingxi City, in the upper reaches of Weihe River, in the middle of Longzhong Loess Plateau. It is connected with Tongwei County in the east, Wushan and Zhangxian in the south, Weiyuan County in the west and Anding District in the north. It belongs to Dingxi City, Gansu Province. Longxi gets its name because it is to the west of Longshan. Since ancient times, it has been the "country of the four Serbs", a place that must be fought for by military families. As far back as the prehistoric period, the ancestors thrived on this land, leaving cultural sites such as Yangshao and Qijia. King Zhao of Qin Dynasty established Longxi County in the 35th year (272 BC) and Xiangwu County in the early Han Dynasty. The Sui Dynasty changed to Longxi County, and the name of the county is still in use today. As of 2016, Longxi County covers an area of 2408 square kilometers and has jurisdiction over 10 towns, 7 townships, 215 administrative villages, 11 communities, 1287 village groups, with a total population of 519200.