Cut off: cut off: cut off; Hong: Hongyan. Watch the geese fly away until they are out of sight. Describe the sadness of parting.
Mud and snow: paw prints left by geese stepping on the mud. A metaphor for the traces left by the past.
As light as a feather: a feather: the hair of a wild goose. Lighter than the hair of a wild goose. Metaphor is very slight or worthless.
As light as a feather: lighter than the feathers of a wild goose. Metaphor is worthless. With "light as a feather".
Lighter than feathers: feathers: the hair of wild geese. Lighter than the hair of a wild goose. Metaphor is worthless.