These two sentences describe the activities of two kinds of birds with image antitheses and arrange them, creating a timely atmosphere for writing about spring ploughing. In this poem, the author personifies the hoe with one word, as if it understands that beautiful spring scenery is fleeting, so we should seize the time to show our charm.
During the spring ploughing, the activities of these two birds in the mountains not only enlivened the mountain village in spring, but also created a strong atmosphere for the following spring ploughing.