1, the shepherd boy herded cattle all day, and was good at observing and being familiar with all kinds of actions and behaviors of cattle, so when he saw Du's bullfighting map, he could find mistakes. Du must take this as a lesson and learn to observe and avoid similar mistakes. Because Du smiled and affirmed the shepherd boy's statement.
2. Mantis can find out the shortcomings of the snake, find its weaknesses, grasp the key points, give full play to its strengths, and finally kill the giant snake. This story tells us that as long as the weak give full play to their strengths, seize each other's weaknesses and fight bravely, they can defeat the strong with the weak.