I think it has to do with the fact they want to keep China CHINESE, Chinese people have that nasty habit of clinging to traditions.(Don't know if this is good or bad though)Unless they are up to something, I don't see a reason why they should do all this and make a great effort to prevent the Chinese from getting access to the outsideworld and vice versa.In China I also noticed that people don't have that much privacy, if not at all.Even on the internet there is surveillance 24/7 The day I find out what China's agenda is, I'll be shot !