Because you never know how ugly human nature is. As the saying goes, the human heart is unpredictable.

In this society, we can always see the ugliness of human nature through the news, whether it is betrayal, greed, or filth. In short, the ugliness of human nature is vividly displayed. I once read in a book that two girls A and B who entered the company together became good friends. They talked about everything and were close to each other. They were like a pair of good besties. Moreover, girl A often asked girls B complained about the company and the boss. Later, their company wanted to lay off employees, and both girl A and girl B were among them. However, only girl A was kicked out later because girl B told the boss about girl A’s complaints. How ridiculous that two people who are usually so good friends choose to betray because of their own interests. This is a display of human nature. When personal interests are involved, human nature is vulnerable.

Perhaps we think we would not do this, but when faced with this situation, do we really not do this? So what if our lives are in danger, will we choose to betray our companions? I think everyone must not know it. After all, you never know what kind of person you will be when there is no threat to you. Another case that shows the ugliness of human nature is the case of South Korea's Sowon, whom we all know. The kind little girl who was praised was actually deeply hurt by her kind actions.

What’s funny is that the criminal himself has a daughter. Because of his own selfish desires, he ruined the life of other people’s daughters. I don’t know if he would think of his own daughter, but I think even if he Even if he thinks about it, he won't give up, because this is human nature, selfish, ugly, disgusting human nature. The poor little girl who was hurt by him may never get out of this shadow for the rest of her life, but after he was released from prison, he tried to gain forgiveness from society and wanted to live a good life. The victim has not yet come out of the shadows, but the perpetrator wants to live a good life. How did he have the face to say such things? I think such a dehumanized person should die without a burial place. Even this cannot comfort the little girl's injured heart. So never test human nature, you never know how ugly human nature is. There are two things in the world that cannot be looked at directly, one is the sun, and the other is the human heart.