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If you ask me I think, it's not just about China but these days because of the better financial situations the Asian nations have, there is more interest to let them host great events and China is one of them because of the good financial situation they have however even in China people won't have good days visiting the country because of crowded hotels and streets. I think After America the next world up should be in Europe.
If use China as the venue or host for the World Cup, I don't think I agree because football is not as popular there as it is in some other Asian countries.
Indeed, China's finances have increased, but to be able to host the World Cup requires not only sufficient financial factors but also support from all parties, including citizens, because it is a densely populated country.
Actually, Asia has several countries that are quite good apart from China, but the decision of which country to host is the full right of FIFA.