Who knows the writing background of Farewell to the Ancient? I need it urgently! Don't grow up, God. Help!

Bai Juyi/kloc-what he did in the examination room when he was under 0/6 years old, at that time, he asked to use the word "fu" for the current two words. The first four sentences of the poem show the diachronic beauty of the life of weeds; The last four sentences focused on the beauty of * * *. The ancient scenery of spring is back, and Sandy in Cao Fang is so charming that Friends happened in this background. Such a scene makes the author melancholy and poetic. The lush grass adds to the sadness of the author's departure. It seems that every blade of grass is full of special feelings. The author ended with this meaningful poem. At this point, the poem points out "Farewell", sets the theme, closes the whole article, and connects "Guyuan-Grass-Farewell" together.