１９９９年，安徽省砀山县公安局收到群众来信１７１件，其中初信１１３件，重信５８件，重信率３３．９％；２０００年，收到群众来信１９６件，其中初信１５５件，重信４１件，重信率２０．９％；２００１年１至５月，接群众来信７５件，其中初信６９件，重信６件，重信率仅 In 1999, Dangshan County Public Security Bureau of Anhui Province received 171 letters from the masses, of which 113 were first letters, 58 were heavy letters and 33.9% respectively. In 2000, 196 letters were received from the masses, of which 155 were first letters, 41, heavy letter rate 20.9%; from January to May 2001, 75 people received letters from the masses, including the first letter of 69, 6 heavy letters, heavy letter only