Picking up morning flowers and evening flowers is a Chinese idiom from Li Qingzhao's "Dream Like Order":"I often remember that I am drunk at dusk in the pavilion and don't know the way back." At night I return to my boat and mistakenly enter the depths of lotus flowers. Fight to cross, fight to cross, startle a pool of gulls and herons." It means that people are intoxicated by the memories of the past and forget the current path. It means that they are addicted to the memories and can't extricate themselves. Morning Flowers and Evening Harvest was originally a poetic theme that gradually developed into a literary criticism term to describe repeated memories, thinking about the past, and in-depth reflection and evaluation of works. It could also be understood as nostalgia and cherishment of the good times in the past. The idiom 'picking up flowers in the morning and evening' was often used to describe the state people were in when they recalled the past and thought about their lives. It expressed a kind of treasure for the good times and a sigh for the past.