In the northeast, geese fly back a few months later.

Hongyan is a migratory bird with yin and yang. In the northeast, the Bailu solar term and Hongyan began to move south for the winter. By the end of the cold dew solar term, a large group of geese (the last geese) moved south.

When the sun is shining, the geese begin to return from where they spent the winter. At the vernal equinox, all solar terms will reach their destination, start mating and hatch goslings.

So when the wild goose flies south for the winter, its ranks increase, and the young geese also fly south with their parents for the winter. At this time, the leading geese of Yan array kept calling, taking good care of their children, flying well, not falling behind, not flying around, and flying with everyone.