What kind of complicated feelings does this poem express?

Ji Hai's Miscellaneous Poems: Disturbed by Worry, Forgotten by Day.

The vast sadness of parting extends to the setting sun, away from Beijing, riding a whip to the east, feeling that people are on earth.

I quit my job and go home, just like a flower falling from a branch, but this is not a heartless thing. It can be turned into the soil of spring and can also play a role in nurturing the next generation.

Appreciation: This poem is the fifth in Ji Hai Za Shi, a group poem composed by Gong Zizhen, a poet in Qing Dynasty. It describes the poet's mood when he left Beijing. The whole poem is divided into two parts, the first two sentences are the first part, and the last two sentences are the second part. In the first part, the poet wrote the majestic sadness of parting with the horizon, sunset and fallen flowers, giving himself a sense of life experience of falling flowers; The second part takes the fallen petal as the transition, and begins to associate it with the fallen petal-spring mud, empathizing with his enthusiasm for changing reality and his will to be unwilling to be lonely and depressed, and then making a statement on behalf of the fallen petal, swearing to the spring and pouring out his will to sing deeply. The image of the whole poem is simple, but the scene is muddy, the contrast is unprovoked, and the mind is clear. In just 28 words, it shows the poet's broad mind, reveals a valuable life value, and has the ideological and emotional capacity of heaven and earth, which can be called the masterpiece of Ding 'an poetry.