According to the query of Aili Education Network, flowing water is a compliment to the layout and development of the article, just like the running of clouds and the flow of water, which is very natural. It is generally used to describe the natural fluency of writing, or painting, calligraphy and singing. It's fast and light. From the stone "Xie Shishu": "Books, poems, and essays are familiar, like flowing clouds, with no definite quality at first, often doing whatever they want and often doing nothing.