I only know that Mr. Qigong evaluated Liu Yong during his lifetime.
Qi Lao's poem "Queju on Shu": The man who carved a boat and asked for a sword in Beiping, I don't understand Liu Zhucheng (Liu Zhucheng is Liu Yong).
Qi Lao also mentioned in his article: Liu Yong was tired and arrogant, and devoted himself to copying Bange Posts. He was like a patient suffering from rheumatic paralysis. He needed at least two people to help him walk. If he let go, he would Slumped on the ground.
It can be seen that Qi Lao disliked Liu Yong's calligraphy.
On the contrary, he admired Zheng Xie's calligraphy very much.