For anyone who pays attention to this kind of stuff, you would know China has an aggressive spy campaign against the US primarily for its technology. So I earnestly ask how in the world would China pass up the opportunity to get hold of the documents Snowden held? He was in their territory with the highest US secrets, and they just let him go? For just nothing in return? Just like that? Snowden said they never got anything (other than what has already been leaked), but there's no way I can honestly believe that when China has so much to gain.