Yes, this is an idea for a post I've had for quite some time. Actually, within civilised areas, Táng dynasty times were probably less "wild" than under later dynasties, especially when the central government couldn't guarantee peace over the whole empire [which is what the Mandate of Heaven was all about]. For instance travelling even on the main roads of the Empire under the Sòng was tantamount to exposing oneself to being robbed -- hence most travel was by the many waterways. Under the Qīng it was so much worse and banditry was so widespread that the biāojú escort agencies came into being (see p41 of The Celestial Empire).