• Portland
  • Kaifeng

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.

Kaifeng, known as Bianzhou and Bianliang in ancient times, is a prefecture-level city in Henan Province. It is a cultural tourism city approved by the State Council and one of the central cities in the core area of the Central Plains urban agglomeration. By 2018, the city had jurisdiction over five districts and four counties, with a total area of 6266 square kilometers, a built-up area of 129.93 square kilometers, a resident population of 4.5649 million, and an urban population of 2.23 million, with a urbanization rate of 48.9%. Kaifeng is located in the hinterland of the Central Plains, the shore of the Yellow River, adjacent to Zhengzhou in the west. Kaifeng Free Trade Zone is one of the three major free trade pilot zones in China (Henan). It is the first batch of famous national historical and cultural cities with a history of more than 4100 years, including Xia Dynasty, Wei State in the warring States period, Hou Liang, Hou Jin, Hou Han, Hou Zhou and Song Dynasty in the five dynasties.
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