See a joke, as follows

American gentlemen spend a lot of money, but it should be done by the British.

China people are too vague to tell.

Jews are smart and don't suffer.

The story should be written like this: if Germans, Japanese, British and Russians drink together, if a fly falls into the wine, Germans think that wine can kill the virus and get the fly out to drink; The Japanese will tell the waiter to change another cup without adding money; The English gentleman asked for another glass of wine and paid for it. The Russians didn't pay attention at all, so they drank the wine in one gulp.