Enter the second-largest city of each country (by metropolitan area). The largest city has been given to you as a hint.
Source: https://en.wikipedia.org/wiki/List_of_countries_by_national_capital,_largest_and_second-largest_cities
The citation on that article won't load for me - it's from a Chinese source. The article text itself agrees with another Wikipedia page (https://en.wikipedia.org/wiki/List_of_cities_in_China_by_population_and_built-up_area) that the metro population of Chongqing is closer to 30 million.
Either way, there does seem to be some broad agreement that Guangzhou is a larger metro area than Shanghai. Thanks for bringing this to my attention!
You need to remove the answer n/a for Vatican City. Even if the box is just text, it will still be registered as an answer that people would need to type in to finish the quiz.
Either way, there does seem to be some broad agreement that Guangzhou is a larger metro area than Shanghai. Thanks for bringing this to my attention!