Severe punishment, as for the sentence that there is a wind of punishment mistakes after breaking the prison for 400 years, how to understand it? Does this mean that there were many criminal cases in the past? At that time, there were no provincial administrative divisions. Big province: greatly reduced.

The meaning of this sentence is:

The number of cases to which criminal punishment is applied has been greatly reduced, so that the total number of cases closed nationwide is only 400, which only means that criminal law is not used.

Incorrect measures, literally put aside, are used to describe less crime.