Use dishes to compose poems. What do the foods in these four dishes represent in the poems?

The two egg yolks in the first dish represent two orioles, and a few green cabbage shreds represent green willows; the cooked egg whites in the second dish represent egrets, and a green cabbage leaf spread underneath represents a sunny day; The third dish, stir-fried egg whites, represents white snow; the fourth dish, clear soup and four eggshells floating on it represent rivers and ships respectively.