Does the plum among the three friends in the cold year refer to plum blossom or wax plum? Isn't plum blossom in spring? If it is Chimonanthus praecox, why are the plum blossoms in some Chinese paintin

Does the plum among the three friends in the cold year refer to plum blossom or wax plum? Isn't plum blossom in spring? If it is Chimonanthus praecox, why are the plum blossoms in some Chinese paintings red? Plum is plum. Plum blossom fragrance comes from bitter cold, that is to say, it will emit fragrance only after experiencing severe cold. Plum blossoms have long leaves in winter and bloom in late winter and early spring. The weather is still cold in early spring, and it is still cold after a winter. Pine trees and bamboo not only exist in winter, but also show their noble qualities in this season.