What does the picture of a boy giving an umbrella to a girl and a girl giving an umbrella to another boy mean?

Everyone is thinking about the meaning expressed by the author. Let me talk about my opinion. Sometimes what you see may be an illusion. On the surface, the girl is holding an umbrella for the boy A in front, and the boy B behind is holding an umbrella for the girl. But if you look carefully at the direction in which the rain falls obliquely, if you think so, it's not ungrateful for girls to protect A at all, because he doesn't feel anything when the rain still falls on him, and it's the same for B to give umbrellas to girls. And normally, the way to give an umbrella to a girl is to give an umbrella to a girl, but the rain will still fall on her. In fact, sometimes you seem to be protecting others, but in fact you are only protecting yourself, which also shows that some things are not always important, otherwise all your efforts will be counterproductive.