San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony"), officially the City of San Antonio, is a city in Texas, United States. The city is the seventh-most populous in the United States, the second-largest in the Southern United States, and the second-most populous in Texas. It is the 12th most-populous city in North America, with 1,434,625 residents in 2020.
Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018.
Hunchun City, which belongs to Yanbian Korean Autonomous Prefecture of Jilin Province, is located in the east of Jilin Province and southeast of Yanbian Korean Autonomous Prefecture. Hunchun is bordered by Hunchun Ridge and Hassan District of Russia's coastal border region. The total length of the border is 246km. The southwest is bounded by the Tumen River and is adjacent to Hamgyong North Road of North Korea. The total length of the border is 139.5 km. The north is bounded by Laoyeling and adjoins Wangqing County, the northwest corner is connected with Tumen City, and the northeast is adjacent to Dongning City, Heilongjiang Province. It is between longitude 130o 03m 21 "- 130o 18m 33" east and latitude 42o 25m 20 "- 43o 30m 18" north, with a total area of 5145 square km. Hunchun is the only border city in China located at the junction of China, North Korea and Russia, because it is at the core of international cooperation and development in the Tumen River region.