Su Wan, a great writer in the Northern Song Dynasty, said when talking about his prose creation: "My prose is like a torrent, which comes out indiscriminately. Caring about the land, gurgling, although there is no difficulty in a day's work; And its twists and turns with rocks, shapes are everywhere and unknown. What is known often depends on what it does and often stops at what it can't. That's all. " Su Wan was one of the eight great masters in Tang and Song Dynasties. His composition is like running water, elusive and beyond the reach of others. But his conclusion that "do what you should do, stop at what you can't stop" is universally applicable.

"Do what you should do" requires the author to be clear about what he should say when writing, regardless of pen and ink. For example, the background of an article, the ins and outs of a thing, the nature and characteristics of a thing, etc. If you are unfamiliar to the reader, you should make it clear and explain it clearly in the article, but you can't simplify it at will, which will damage the meaning of the article and lead to the defect of inaccurate carelessness.

"Stop at what you can't stop", that is to say, don't write one more word, but "cherish ink as gold". When you are in love, you are free and unrestrained, and you are unwilling to give up what you love. It is bound to be flourishing, lengthy and procrastinating, and even the problem of "writing a thousand words and pulling Wan Li" will appear.