From a historical standpoint, Japan during WW2 tried to annihilate and take over China. They have had MANY confrontations before that. Its a culture thing, i think they find their culture repulsive, Jap's hate a lot of other Asian cultures like Korea. It doesnt matter as a lot of the Asian cultures have superiority complexes towards each other. Like i was just reading if you are American of Chinese descent they consider you only American. A lot of this generation dont share in this, its generally older people. Scotland and France where historically always chummy. Scottish warriors fought on the side of France during the medieval period and vice versa.