What is the difference between Bai Juyi's Ci and Li Shangyin's Liu Ci? What are the feelings of poets?

Bai Juyi's Poems of Yang Liuzhi and Li Shangyin's Poems of Willow both express the poet's thoughts and feelings by chanting willow. If we say that "White Poems express thoughts and feelings of self-injury, while Li Poems express feelings of political corruption and buried talents", then Li is rigid. Because Bai Shiyun said, "A thousand branches of spring breeze are softer than gold and softer than silk." In the wild garden in the west corner of Yongfeng, no one belongs to that person every day. "The first two sentences write about Liu's lovely charm, and the last two sentences express feelings, expressing feelings about political corruption and talent burying at that time through regret; Shi Li once danced in the east wind and enjoyed a trip to the Spring Garden. How to be green to clear autumn, accompanied by the sunset cicada? "The autumn willow in the poem has experienced the disparity between the past and the present and is a vivid portrayal of the poet's life experience.