Water heating and sand temperature. Beautiful and affectionate mandarin ducks snuggle up to each other and sleep peacefully, which is very charming and lovely. Swallow is a migratory bird, and the poet described it as deliberately highlighting the characteristics of spring.
The first two sentences "Sunset", "Jiangshan", "Spring Breeze" and "Flowers and Plants" constitute a big scene outlined in bold lines, and the end of the sentence highlights the poet's strong feelings with "beauty" and "fragrance". The last two sentences are detailed pictures, which are not only dynamic descriptions of swallows flying, but also static portrayal of Yuanyang sleeping.
The busyness of swallows contains the vitality of spring, and the leisure of Yuanyang reveals the gentleness and quiet movement of spring, which set each other off and become interesting. And all this is bathed in warm sunshine, harmonious and beautiful, which really gives people a feeling of spring.