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Before the national subjugation, his poems were basically flowery words. Such as "Jade House in Spring", "The makeup is first taken, and the flowers in the Spring Palace are filed." These words came out when he was playing with his concubines.
After the national subjugation, his poems were full of sadness about the Spring and Autumn Period, such as Yu Meiren and Langtaosha.
From the point of view of historians and writers, Li Yu's later poems have high literary value, and many famous sentences that have been passed down through the ages are produced by Li Yu's later poems.
"Don't lean on the fence, infinite, difficult when easy to see. Running water goes in spring, on earth. " "How much sorrow can you have, just like a river flowing eastward" and so on are famous sayings throughout the ages.