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.
Yulin, known as "Shangxun" in ancient times, began in the Spring and Autumn and warring States period, flourished in the Ming and Qing dynasties, and was stationed in Yansui Town (also known as Yulin Town), an important town on the nine frontiers of the Ming Dynasty. Emperor Kangxi engraved a stele of "two isolated cities and a thousand years of loyalty and courage". There is a good reputation of "the ancient city of Taichung in the north of South Tower, the sixth floor riding the street all over the world". Such a strange urban construction is rare in China, which is also an important symbol of Yulin as a national historical and cultural city. Yulin is located in the northernmost part of China's Shaanxi Province, at the junction of the Loess Plateau and Maowusu Sandy Land, which is the transitional area between the Loess Plateau and the Inner Mongolia Plateau. Facing the Yellow River and Shanxi Province in the east, Ningxia and Gansu in the west, Yan'an in the south and Ordos in the north, it is the border of Shaanxi, Gansu, Ningxia, Mongolia and Jin. It has jurisdiction over 2 districts, 1 county-level city and 9 counties, with a resident population of 340