Security in Shanghai

On security precautions in China, the Chinese do apparently take Islamic terror and other terrorists (probably their Muslim separatists) quite seriously. They may not have policemen armed with submachine guns (SMGs) at every corner and they don't, but they do have many metal-detectors in public areas, for instance the 16th East China Fair 2006 and the Shanghai Pudong International Airport. The checks are quite thorough and they are not the cursory look-overs. I am impressed.