I would have to agree...every country has some type of excessive jingoism. By no means is China a rude exception. It is a fact of human nature to be proud of their nationality, but taking it to the level in which one is putting down other countries is taking it too far.
The theme of bad relations between Japan, Korea, and China are still apparent today, unfortunately...all of these nations fascinate me. The discussion that was going before, in August (long time ago!) I find rather intriguing. I too would have thought it would have occured after the Meiji Restoration, but this is an interesting argument.