As can be seen from the picture, a teacher-like cock stands on the bank, proudly and vividly explaining how to swim. His students, three ducks, float in the water, listening attentively.

The picture wants to remind us of the importance of self-awareness. Both the cock and the ducks fail to know themselves clearly, so they make vain effort. The cock is definitely unable to swim but works as a swimming coach confidently. On the other hand, the ducks, the born swimmers, are eager to learn how to swim, even from a cock. Lack of a sound self-knowledge, they are bound to fail. As to us, we should have a right judgment to our ability and choose to do what are really suitable for us.