On the picture of the performance of the book of songs "Jia Jian"

at the beginning, Jianji shows readers a sad picture: it's a hazy morning in late autumn, and the endless reeds with dewdrops are shrouded in the morning fog. A river winds away. Looking at the distance, it is a small sandbar. This is a bleak picture of late autumn morning light, which sets off the sad feelings of the protagonist.