On the evening of October 28th last year, Professor Cheng Chunming of China University of Political Science and Law was hacked to death by his student Fu Chengli. Subsequently, Fu Chengli called 110 to report the crime. On the morning of July 6th, the case went to trial, and Fu Chengli claimed that there were two reasons for killing Cheng Chunming. One is that he had an affair with his girlfriend while having a wife...