Bai Juyi-easy to understand, can be said to be easy to understand.
Su Shi-the pen is vertical and horizontal, with romantic color.
Mutu-steep, can be said to be graceful and restrained.
Han Yu-bold and unconstrained, writing poems in words.
Styles inherit and influence each other. If ordinary people look at it, it is difficult to tell who is who. However, Du Fu's poems are still pretty.