First of all, we need to check what the author was like when he wrote this poem. For example, being demoted, going to jail, winning the first prize, getting separated from your wife, making friends, etc. Next, put yourself in the author's shoes and wonder how you would feel if you were in his situation. Falling out of love will cause pain, failure in career will cause frustration, and you will turn to mountains and rivers, etc.
Then look at the poems in detail and distinguish the possible hidden meanings of some of the images. For example, although some people were demoted, they seemed to express their love for the landscape and mentioned many flowers, birds, insects and fish, but suddenly wrote "Kunpeng" at the end, which means that although this person has failed in his ambition, the fire in his heart is still burning, etc. wait. Such people and mentality account for the vast majority of poems. After all, poets' self-positioning is mostly based on a spiritual realm of escaping from the world. Colorful imagery and rhymes are generally just to prove one's literary talent and boost one's confidence.