What are the three aspects of the poem "Moonlit Night on a Spring River"? Why does the moon play the role of soul in this poem? why

The whole poem starts with scenery, emotion and reason in turn. The first part describes the beautiful scenery of the Chunjiang River. The second part is about Jiang Yue's emotion. The third part wrote the thoughts of the wandering women's parting. The whole poem takes spring, river, flowers, moon and night as the background and the moon as the main body. "Moon" is a blend of scenes in the poem, beating the pulse of the poet, and it is like a life bond in the whole poem. It runs through ups and downs, and poetry rises and falls with the birth and fall of the moon. The moon went through the process of rising, hanging high, setting in the west and setting in the sun overnight. In the moonlight, rivers, beaches, sky, Yuan Ye, maple trees, flower forests, flying frost, white sand, boats, tall buildings, dressing tables, anvil stones, flying geese, diving ichthyosaurs, sleepless women and wandering wanderers form a complete poetic image, showing a picture full of philosophy and life interest. The color of this picture scroll is light and rich. Although sketched in ink and wash, it is "ink in the colorful", showing colorful artistic effects from the complementary of black and white and the coexistence of reality and reality. It is like an elegant China ink painting, which reflects the beautiful artistic conception of the moonlit night by the river. [ 10]