Du can't have sincere repentance. If it was so easy to confess, he couldn't have killed so many people, and he was not soft-hearted at all, and his killing methods were particularly cruel. Crocodile tears is a famous western proverb. It is said that crocodiles shed fake tears before eating people. In fact, crocodiles are not sad at all, just lubricating their eyes. When the crocodile dives into the water, the blink film in the crocodile's eyes is closed, which can not only see the underwater situation clearly, but also protect the eyes; When the crocodile is on land, the instant film is used to moisten the eyes, which needs tears to lubricate.
It is obviously impossible for a cruel murderer to leave sincere tears. Du's expression illustrates this point. If he really repents, it should be silent tears. It is impossible to cry. Most people can pretend to cry like this. Crocodiles will have nothing. You are my benefactor, so I won't take your idea. As long as he is hungry, he will eat anything. Crocodiles represent hypocrisy and cruelty, and Du represents this. He shed crocodile tears to show that he was wrong. It's just that he knows that he will be reviled and won't be forgiven after being caught, so he pretends to regret it to get forgiveness from others, but obviously we won't forgive him so easily, and he is just struggling at the end.
People are not stupid enough to be a vicious person, and they will sincerely repent after killing so many people. Du, a hypocrite, is putting on a hypocritical play. It's so fake that anyone with a discerning eye can see it. After the play, Du was even more hated. Others thought that he was laughing at himself and that they were too stupid to see that Du was acting.
Crocodile and Du think they are the same, but one is an animal and the other is a man who kills people and doesn't spit out bones.