The homophonic usage of the idiom "killing people and killing people" is most common in game competitions. "Kill to kill the heart" is also one of the classic lines in the movie "Let the Bullets Fly". It means to destroy someone's body. It is better to expose and condemn such a person's motives, thoughts, and intentions.
The original text of "killing people and punishing the heart" comes from "Book of the Later Han Dynasty." "Huo Xu Zhuan":
The meaning of "Spring and Autumn" is to determine the original situation, to forgive the crime and to punish the intention. Therefore, although Xu Zhi committed regicide, he was not guilty, but Zhao Dun read the book for indulging the thief.
The meaning of this passage is: "Spring and Autumn" advocates that faults should be judged based on the actual facts of the matter, and the deeds should be forgiven but the motives for doing them should be severely punished. Therefore, although Xu Zhi committed regicide, he was not convicted; even though Zhao Dun did not commit suicide himself, he still committed a heinous crime and was therefore convicted.
So by extension, the meaning of murder and heart-killing is: destroying a person's body is not as good as exposing his thoughts and motives.
Extended information
In "Let the Bullets Fly", after the tragedy caused by a bowl of jelly, Liuzi committed suicide and died by caesarean section. At this time, Zhang Mazi definitely wanted to kill someone to avenge Liuzi. But the master stopped Zhang Mazi in time and said these four words: murder and heart-breaking.
From the master's point of view, he definitely didn't want Zhang Mazi and Huang Silang to draw swords and draw blood, which would damage their harmony and make them unable to make money. So he had to dissuade him, so why did he know that saying these four words would be useful to Zhang Mazi?
When I was discussing how to make money with the master, the master said a wise saying: "When the county magistrate takes office, he must create a clever name, win over the wealthy gentry, and pay taxes and donations."
"After getting the money, the gentry's money was returned in full, and the common people's money was divided into 30 and 70."
But Zhang Mazi said: "I want to stand still and give the money back." Earn it! "
Coupled with the fact that he beat people in public and prevented people from kneeling down, it is impossible for the master to not know what Zhang Mazi wants to do. Yes, Zhang Mazi may not care much about money, but he cares about Huang Silang very much.
It is not difficult to kill a Hu Wan, and even Huang Silang is not difficult for Zhang Mazi. The key is how to kill him: to eliminate him by violence without any reason; or to make him completely lose the support of the people and mobilize the masses to eliminate him. Therefore, he and the landlord class he represents are not allowed to stand up.
So the focus of killing people and punishing the heart is not to kill people, but to create public opinion, expose Huang Silang's background, and completely ruin Huang Silang's reputation. Only then can we mobilize the forces of justice to be invincible.