Why is Hangzhou sentenced to three years for killing one person and Chengdu sentenced to death for killing four people?

Hello, landlord, I hope I can help you answer. First of all, law has little to do with mathematics. As far as combined punishment for several crimes is concerned, determining the term of imprisonment is not a simple addition. Of course, you can't say how many years it takes to kill a person. According to what you said, it is obviously unreasonable to kill 20 people for 20*3=60 years. Secondly, in terms of conviction and sentencing, besides the criminal behavior and consequences, the most important thing is the subjective aspect of the offender. That is, whether criminals are intentional or negligent when committing criminal acts. This is an important part of sentencing. Intentional crime is generally more serious than negligent crime. Finally, the extent of harmful consequences and the impact on society are also very important. It is a bad plot that has a serious social impact. I believe you should understand something after reading these.