One must improve one's morality, otherwise, one is likely to encounter various obstacles when going about their business.
Ma Lin is currently in such a state.
He remembered some things that had happened in the past and felt full of anger.
Although time had passed, they were no longer related to his current life.
One must look forward and not be hindered by the past. Wrongdoers will be punished by society; we should not take matters into our own hands. We can report illegal and criminal activities, but for things that are not illegal or criminal, we should try to be as tolerant as possible.
But what about the anger in one's heart?
If we punish wrongdoers ourselves, it may be satisfying, but we will suffer backlash.
On the other hand, when society metes out punishment, not only is it satisfying, but we also avoid the burden of negative emotions, and our life becomes increasingly happy and beautiful.