What is the meaning of quatrains in two ancient poems of Grade Two in Senior High School?

The quatrains in two ancient poems in grade two refer to those written by Du Fu, a poet in the Tang Dynasty, when he lived in Chengdu. This poem depicts the beautiful spring scenery around the thatched cottage, and the poet's comfortable and happy mood is also contained in the landscape. Poetry is a scene, criss-crossing, moving and static, forming a colorful, clear and open picture.

Original: Two orioles sing green willows, and a row of egrets go up to the sky. My window framed the snow-covered western hills. My door often says "goodbye" to ships sailing eastward.

The poet presented a beautiful picture with "blue" and "red" full of strong colors. The green lotus leaves rushed to the horizon with great momentum; Beautiful lotus flowers are particularly red in the bright sunshine. Through the opposition between "orioles" and "green willows" and "egrets" and "blue sky", two orioles sang on the green willows and a line of egrets flew to the high blue sky. The four kinds of scenery are vivid and colorful, depicting a bright, fresh and moving spring scene.