The last two sentences of the quatrains describe the scenes of swallows and mandarin ducks.

(1) Sunset, Jiangshan, Spring Breeze, Flowers and Plants. (2) These two sentences not only describe the flying dynamics of swallows, but also outline the sleeping posture of Yuanyang. A quiet action makes each other interesting. The busyness of swallows implies the vitality of spring, while the leisure of Yuanyang reveals the tenderness of spring. (3) Bright and beautiful colors, full of vitality, soft and harmonious (only one point is required), which reflects the poet's joy in seeing the vitality and prosperity of nature in early spring (1 point).