2. Summer is quiet, because the wheat seedlings are waiting for a bumper harvest; Summer is noisy, because cicadas are singing the joy of life; Summer is lively, because children can enjoy a relaxed and happy holiday again.
3. Autumn is rich, because the branches are full of fruits; Autumn is barren, because the flowers on the branches have already withered; Autumn is satisfying, because a year's hard work has finally paid off.
4. It's very cold in winter, because the north wind whistled across the wall; Winter is warm, because the stove dispels the haze in my heart, and winter is peaceful, because next spring is coming again.