This poem of quatrains expresses the poet's comfortable mood of temporarily living in a thatched cottage after ending his wandering life. This poem was written by Du Fu after he entered Shu. It expresses the emotion of traveling in a foreign land. The quatrain depicts a bright and colorful picture of early spring. It shows that on the willow tree that has just sprouted in front of the window, there are two oriole birds singing happily. The singing expresses the poet's comfortable mood of temporarily living in the thatched cottage after ending his wandering life, and also expresses the poet's joyful feelings towards the vitality and prosperity of nature in early spring.