Ummm, its kind of ridiculous to decide that an entire nation of people are violent, sadistic bastards. We have been trained by modern society to reject Imperialism and territorial expansion because they are contrary to the ideologies of those currently in power over society and the world economy. China is a growing economic, political and military power. As the United States' power gradually wanes, we will see China take a greater and greater position on the world stage. In effect, we are looking at a world with more than one super-power.
You can deny it if you like, but China will gain power. And this will be more in line with history than our current world order. Just wait and see.