World's biggest census begins in China


BeijIng - As part of the country's sixth national census, which began on Monday, 100,000 census takers are knocking on doors in Beijing. They have 10 days to complete their task. The exercise will involve 6 million door-to-door census takers visiting 400 million households, including foreigners and people from Hong Kong, Taiwan, and Macao who live on the mainland.

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