1. The snake gradually came to life. After it came to life completely, it bit the benefactor hard with its sharp fangs at lightning speed, causing him fatal wounds.

2. As a human being, you must distinguish between good and evil, and you can only extend a helping hand to kind people. No matter how kind and righteous you are to those evil people, their nature will not change.

3. The fisherman and the snake satirize those evil people who repay kindness with evil and the hypocritical people who help evil people.

4. Warn us to learn to distinguish right from wrong and not to be blinded by beautiful things, because foxes also cry and snakes are in trouble.