What do you mean by a few years in autumn?

This idiom comes from the poem "Autumn Night" written by Du Mu in Tang Dynasty: "Qiu Guang painted a screen with a silver candle, and a small fan brushed the fireflies lightly. This is a good year with several autumn years. "'Autumn stars move a few degrees' is the cycle of time and the change of seasons. Bullfighting constellation refers to the movement of stars in the sky. The whole sentence means that time flies and the years are endless, just like the stars in the bull constellation, they have experienced several autumn changes. This sentence means that life is short and time keeps flowing, emphasizing cherishing time and grasping the beauty of the present.