Puankhequa , also known as Pan Wenyan or Zhencheng, was a Chinese merchant and member of a cohong family, which traded with the Europeans in Canton during the Qing dynasty .
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Argentina is a massive South American nation with terrain encompassing Andes mountains, glacial lakes and Pampas grassland, the traditional grazing ground of its famed beef cattle. The country is famous for tango dance and music. Its big, cosmopolitan capital, Buenos Aires, is centered on the Plaza de Mayo, lined with stately 19th-century buildings including Casa Rosada, the iconic, balconied presidential palace.

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