Let's talk about this poem in Li Shangyin's Jinse first. I want to know why my Jinse has fifty strings, and each string has a flowery interval. The sage Zhuangzi is in daydreaming, bewitched by butterflies, the emperor's longing for love cries in the cuckoo, the mermaid cries pearl-like tears in the moon-green sea, and the blue fields breathe their jade in the sun. A moment that should last forever has come and gone before I know it. "A moment that should last forever? I didn't know until I came and left. Literally translated, I can't recall the feelings of joys and sorrows today, but I was careless in those days and was already disappointed. At the end of the couplet, I ask myself and answer myself, pointing out that this poem is recalling the past and drawing lessons. The so-called "this feeling" refers to the obsession with "dreams", the deep love for spring, the sadness of "tears on beads" and the confusion of "jade smoke" written in Qin and Jing's couplets. Do you feel sad when you look back on the past? When the Chinese New Year is over, you will already feel the bitterness and sadness. In the hazy world of jade and smoke, the poet looks back on the past events of the New Year, reminisces about the past love, and leaves behind the disappointment of that year, which makes him sigh again: looking back, the residual photos are more empty. This poem was written by the author in his later years, when he recalled the past and expressed his feelings about the ups and downs of his life. Although the description is euphemistic and vague, it obviously has its sustenance In his poems, Li Shangyin concealed the specific events in his life, implicitly and euphemistically expressed his bumpy fate and sad feelings from many different angles, and lamented the passing of the New Year and the emptiness of his ambition.