What does it mean that geese are tired of feathers?

These four words are not idioms, but a kind of fortune telling. When the cold winter comes, geese always migrate from the north to the south. It is precisely because they "crossed" many difficulties and obstacles that they felt tired in the warm south, and then naturally enjoyed leisure. This proverb shows how difficult life is for teenagers. It is a sign of age. To put it bluntly, only after experiencing the hardships of youth can we succeed in middle age. He's a fortune teller. You're amazing. Haha, what a saint