"China is SO big." That's a comment that I hear often when talking to people about China. It's an observation that I have always found a bit odd given the fact that China is roughly the same size (slightly larger) as the US.
Here's a great map that illustrates this:
How big is China? About the same size as the US.
Image source: chinapage (check it out -- they've got loads of interesting maps of China and Asia)