Peacock and Zhu Na: Peacock complained to Tianhou that the nightingale pleased everyone's ears with her singing. Her voice was so ugly that everyone laughed at her.

Only by knowing your own advantages and disadvantages can you choose your life more rationally. If you don't know your own behavior and incompetence, it will be difficult to make a correct life choice for society. Therefore, it is important to know yourself. A correct understanding of yourself is conducive to a correct life orientation, and a correct understanding of yourself can ensure a healthy and happy life. Know yourself through self-observation. Know yourself through others. Know yourself collectively. Through these three ways, we can know: our appearance and physical condition. Such as appearance, manners, health, etc. Self-image. Such as: my position and role in classes and schools, my performance and adaptability in public places. The spiritual world of self. Such as: personality, hobbies, specialties, moral level, intelligence, ability and so on.