What thoughts and feelings does this poem mainly express?

The main content of Back to Yan 'an is to express the poet's joy when he returned to Yan 'an after a ten-year absence, and to praise Yan 'an's great contribution in the revolutionary history of China.

This poem closely follows the word "Hui" and describes the process of returning to Yan 'an. Taking this as a clue, I expressed my love and praise for Yan 'an. The first part focuses on inner excitement. The second part expounds the reasons for the in-depth development of poetry thought.

Back to Yanan is divided into five parts:

The first part can be abbreviated as: Going back to Yan 'an is about the excitement and joy of going back to Yan 'an.

The second part: Recalling Yan 'an, recalling the life in Yan 'an that year.

The third part: Talking about Yan 'an is a warm scene to write a family gathering and talk.

The fourth part: The purpose of praising Yan 'an is to write a new look of Yan 'an city.

The fifth part: praise Yan 'an, praise Yan 'an's glorious history and look forward to the future.