plain for mathematical notes, square grid for notes in physics class, tightly spaced lines for other and for any notes besides my classes it doesn't matter what kind of paper I use.

I agree but you made a mistake, china is not communist country, they may call themselves communist but they aren't. China used to be communist country, now it isn't. China nowadays is just a plain totalitarian government. And in addition china is very capitalistic, just as western countries were in early industrial period before industrial revolution. The real communism's major goal should be "build utopia", just like in Star Trek. I know that this is possible, in 1968, before soviet occupation of Czechoslovakia, czechoslovakian politicians were very active in human rights issues(it was called "socialism with human face"(direct translation)), but their effort was stopped the moment when Warsaw pact armies invaded our country. So true enemies of freedom and personal prosperity are monstrous power-hungry, imperialistic countries such as china or soviet union. In USA, I have no Idea about government but I know that companies with large amounts of money are enemies of your freedom because they simply don't care, and if you try to sue them, you fail because they have more lawyers.