The concept of terrorism, as it evolved and is understood in the West, did not exist in imperial China. In that setting, political criminality took the form of violence against the emperor, and was viewed as harmful as it induced fear and led to "chaos." With the exception of "good" political violence against rulers whose lack of propriety and virtue resulted in loss of the mandate of heaven, violence was seen as contrary to human nature and the Tao. Kam Wong argues that the dynamics of imperial China form the basis for contemporary Chinese understandings of terrorism.