Not a smart idea for a lifetime criminal. Seems Zhang had been arrested before, spent time in the slammer and had to submit a sample of his DNA for future reference. So it was easy for police to match his DNA to the incriminating poop although they probably argued as to which one had to put it in the evidence bag. Cops say Zhang has been responsible for over 250 burglaries over the last four years and were glad to get him off the streets.
Source: Global Times