Who knows the content of Huai Su's essays?

Huai Su's book review: If calligraphy is compared to a mountain, if the mountain is not high, the earth will have no aura; If compared to a pool of spring water, if the spring water is not deep, the water is not clear enough; If calligraphy is not good enough, there will be no fame. Later, people who learn calligraphy can take a warning. I have been "hiding the truth" (Huai Su's word for hiding the truth) for almost four years, and I was almost disabled by rheumatism. Recently, thanks to God, my illness has subsided slightly. Now some people say that my calligraphy is wild and elegant, which has exceeded previous years. I don't know where my strange words come from, so I'm often at a loss. It was an honor to see the book post of "Two Thanks" yesterday. After studying the knowledge inside, I know that things like this are common in the history of calligraphy. -Interpretation of Shandong poet Yang