Radio Free Asia reported that Chinese scholars had shown that the highest per capita income in mainland China was 55 times the lowest. The difference is much higher than the officially published figures. Scholars believe that corruption is the reason for such a wide gap. It is the result of an ill-conceived system, and of the "gray" income to special groups [that is, income in the form of bribes — Ed.]. The wealth gap causes widespread dissatisfaction among the members of the public and poses the biggest threat to a harmonious society and sustainable economic development.
Source: Radio Free Asia, July 28, 2009