True, Chinese border control is way less intrusive. It has to be said though that China handles foreign policy differently, so the number of groups attempting t

True, Chinese border control is way less intrusive. It has to be said though that China handles foreign policy differently, so the number of groups attempting terrorist attacks is comparatively low. I'm not sure about the US, but they do have scanners in the subway and in train stations, but the scanning they do is lackluster at best. They did however once find a 6 inch knife in my bag (i forgot it in there) on my return trip from Wangfujing. If I truly wanted to get it across, I could have just hidden it in a pocket, as there are no metal detectors in the subway. I assume the xrays are simply there to detect larger, bag based bombs or to convince foreigners that there is actually security.