What was the first Chinese city to reach 1 million population?

Answer 1

Probably Beijing, in the early nineteenth century. Earlier million-cities have been claimed, but capitals seem rarely to have exceeded half a million.

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According to my knowledge and information its "Hangzhou" is the first Chinese city to reach 1 million populations. After Hangzhou Beijing, Guangzhou cities are ranking for their population.

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As I said, capitals before the 19th century rarely exceeded half a million. Hangzhou is one such. The walls enclosed fewer than 30 sq km before the 15th century, 40 afterward, and the city was said to be of low-rise construction, pointing to a population around 500,000. High early household estimates are likely to relate to a far wider county population (this was still going on in the 19th century too, hence I suspect some of the very high figures for even Beijing). Guangzhou's walled area was far smaller, but is said not to have encompassed the whole city: early returms indicate something of the order of 300,000 inhabitants for the whole, rising sharply in the 19th century; whether it reached a million even then is questionable, but Beijing was already there.