Some people think that this is a political poem, and between the lines, it expresses Li Shangyin's feeling that his career is not smooth.
If you understand it from this aspect, you will sympathize with Li Shangyin's experience. In ancient China, it was difficult for many talented literati to make contributions. Li Shangyin described this feeling very delicately in his poems.
Some people think that this is a love poem, and it is Li Shangyin's recollection of his lost love, which can be seen from the couplet "and a moment that should last forever".
Everyone will have such love, so when reading Li Shangyin's "Jinse", I think of my lost experience and feel sad.
Others think that this is a poem that regrets the passage of time. It is precisely because time can't stay that there will be many melancholy moments in life.
In the eyes of different people, the theme of this poem is different, but what is certain is that people always tend to choose a theme that they know best to interpret this poem, so Jinse will be liked by many people.