A brief analysis of the plot:
1. People are killed by others. They have no other purpose, but simply want to kill.
2. He himself knew from a young age that he was such a person. The reason why he confessed repeatedly was because he was also struggling to survive and destroy himself. In the end, when the girl was about to say that she was bullied by her father, he finally made up his mind to go in the direction of destroying himself. If he didn't make a decision, there might not be many opportunities in the future.
3. Everyone touched the container. In the end, everyone only touched the outer shell of the container. Use the container to imagine what's in the container. However, the inside of the container is empty.
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