Loneliness vibrates, flying sand and stones.

It means windy. These two sentences are from Bao Zhao's Wu Chengfu, "Frost on the edge, and the wind is fierce. The lonely canopy vibrates by itself, and it flies in the sand. The bushes are endless, the bushes are thin and interdependent. " In Tang Dynasty, Lu Yu recorded that Huai Su and Wu Tong were brothers, and they often accepted his paintings. Tong said, "Call Tong privately and say,' I feel strange when flying alone in the sand'. The sage of grass is here. "That is to say, learning calligraphy is not completely limited to practicing calligraphy in the study. It can also be understood from the myriad weather in nature. If you must ask what artistic conception these two sentences refer to, I'm afraid everyone will have to understand for themselves.