A broken feather, how can I resist it? The north wind blows, and I will never leave.
Literally: Wild geese live in the deep mountains in the north, and their feathers are as white as snow. The north wind is bleak, and the geese fly south.
What if the wing is broken? The north wind is cold and will never part.
In the cartoon "The Bright Moon in Qin Dynasty", it is a metaphor for Gao Jianli's feelings that accompany Snow Girl in desperation.