Seeing yourself clearly with great joy and great sorrow means that you can not be complacent when you are happy, but you can control your emotions when you are sad and recover them in a short time. Ups and downs mean that when ups and downs, friends will compliment you, while when ups and downs, people will leave tea cool, no one will look at you, no one will help you, and even when you are down, so that you can see whether your friends are worth your close friends.