In Farewell to Cambridge, through which images did the author express his feelings?

First, "Golden Willow", a willow tree by the river, was dyed golden by the sunset, like a bride with heavy makeup. Its beautiful shadow was reflected in the waves of Jianhe River and rippled in the poet's mind.

Second, the green "green grass" seems to wave to the poet in the clear and soft waves of He Kang, and the poet is willing to be such a water plant.

The third is "clear spring", under the shade of elm trees, like a rainbow in the sky, a rainbow-like dream is precipitated.

The fourth is: "Long pole", supporting a boat of starlight, wandering to greener grassland, dreaming and singing.

There are clouds at the beginning and end, ***5.