• Portland
  • Huai nan

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.

Huainan, a prefecture-level city under the jurisdiction of Anhui Province, referred to as "Huai" and the ancient name "Zhoulai", is located in the central and northern part of Anhui Province, in the hinterland of the Yangtze River Delta and on the bank of the Huaihe River. it is known as "Zhongzhou throat, Jiangnan barrier" and "colorful Huainan". It is an important node of the urban agglomeration along the Huaihe River and the core city of Hefei metropolitan area. Huainan has a total area of 5571 square kilometers and has jurisdiction over 5 districts and 2 counties. By the end of 2016, the total population was 3.456 million. Huainan is the energy capital of China, the industrial granary of East China, the important industrial city of Anhui Province and one of the 13 larger cities of the State Council. It has obtained China's excellent tourist cities, 100 livable cities, national greening model cities, national garden cities, the first batch of national pilot smart cities, the best investment cities in China, the happiest cities in China, and Chinese idioms.
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