China has done a lot of blunders earning its current incredibly negative image in general, also related to the dynamics of perception and environment. This includes sports, can't be helped
Everyone has stereotypes, a German comedian once said "every few minutes during a match, an Italian player gets severely injured or nearly killed. But at the end of the game all 11 are still there, how does the heck do they do that?"
As for the ethnic thing I agree you can't do it on an overly limited or overly large scale, but they do exist.
are you talkin about blunders in football or blunders in general? if its blunders in general it has more to do with the media outside of China deliberately misinterpreting a lot of things. as for environment, i remember london used to have smogs that kill thousands every year. 64 is another good example, when such a complex issue is reduced to a man vs a row of tanks, you know something is wrong there.
but if its blunders in football i gotta agree...China has a long way to go in that