• Portland
  • Jiuquan City

Portland (/ˈpɔːrtlənd/, PORT-lənd) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous county in Oregon. As of 2020, Portland had a population of 652,503, making it the 26th-most populated city in the United States, the sixth-most populous on the West Coast, and the second-most populous in the Pacific Northwest, after Seattle. Approximately 2.5 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous in the United States. About half of Oregon's population resides within the Portland metropolitan area.

Named after Portland, Maine, the Oregon settlement began to be populated in the 1840s, near the end of the Oregon Trail. Its water access provided convenient transportation of goods, and the timber industry was a major force in the city's early economy. At the turn of the 20th century, the city had a reputation as one of the most dangerous port cities in the world, a hub for organized crime and racketeering. After the city's economy experienced an industrial boom during World War II, its hard-edged reputation began to dissipate. Beginning in the 1960s, Portland became noted for its growing liberal and progressive political values, earning it a reputation as a bastion of counter-culture.

Jiuquan, a prefecture-level city of Gansu Province, is located between Altun Mountain, Qilian Mountain and Mazong Mountain at the western end of Hexi Corridor in the northwest of Gansu Province, between latitude 38 °09 "42 °48" north and longitude 92 °20 "100 °20'E. it has been the traffic fortress of the Central Plains and the northeast leading to Xinjiang and the western region since ancient times. In the north, except for a small part of Mongolia, most of it is connected with Alashan League in Inner Mongolia and Xinjiang Uygur Autonomous region to the west. The southern boundary of Qinghai Haixi Mongolian Autonomous Prefecture and Haibei Tibetan Autonomous Prefecture is adjacent to Zhangye City in the east, with a total area of 192000 square kilometers, accounting for 42% of the area of Gansu Province. Jiuquan is one of the four counties in Hexi in the Han Dynasty and an important town of the Silk Road. The terrain is high in the south and low in the north, tilting from southwest to northeast, Qilian main peak from east to west, Gaolai Mountain,
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