What is this calligraphy about? I found it among the things discarded by my family. I don't know how to write it. Is it valuable?

Scribbled handwriting reminds me of a poem. Du Fu said, "Putting pen to paper shakes the wind and rain, and poetry makes ghosts cry." This poem is written for Li Bai, praising the exquisiteness of Li Bai's poems. Although this couplet is not exactly this poem, its meaning should be similar. As for the collection value, it depends on who wrote it and how old it is. But judging from the picture, it should be written by modern people. It is not very valuable, but it can be used to cultivate sentiment. Hope to adopt. Thank you.