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.
Luding County, located in the southeast of Ganzi Tibetan Autonomous Prefecture in Sichuan Province, is located in the transitional zone from Qinghai-Tibet Plateau to Sichuan Basin, bordering Tianquan and Laojing in the east, Kangding and Kowloon in the west, and Shimian County in the south. The county is 236.2 kilometers away from Chengdu and 49 kilometers away from Kangding. The county seat is 1321 meters above sea level, with 7 towns, 5 townships and 145 administrative villages within its jurisdiction, covering an area of 2165.35 square kilometers. It is inhabited by 17 ethnic groups, including Han, Tibetan and Yi, with a total population of 87065 at the end of 2017. It is a mountainous multi-ethnic county with the smallest land area, relatively high population education, the densest population and rapid economic development. it is also a regional trade center in the eastern part of Ganzi Prefecture and a supply base for agricultural and sideline products in various counties in Ganzi Prefecture. It is known as the "Dongda" of Ganzi Prefecture.