Friend or foe?

Why am I the only person I know who can easily imagine America being invaded by the Chinese, Pearl Harbor style? They're big. They're powerful. They're secretive. They have nuclear weapons. They need more living space and they practically own us anyway. Recently there have been reports of them hacking into our utility grids and communications systems. Why couldn't they just deprive us of power and fly right in?  Okay, it's paranoid, it's a highly dramatic conspiracy theory. Or is it? I just hope our spy programs are keeping an eye on whatever they're building.