The use of materials should be reasonable. Too little material results in poor performance, and excessive material leads to submergence. Trying to obtain material that is actually needed but still in place; trying to enrich and perfecting materials that are expressive but flawed; only cutting off love for material that is interesting but may cause misunderstanding or affecting the performance of the topic; Sentences with discrepant material should be resolutely deleted. Completely drastic cut deleted, correcting the shortcomings of the manuscript. In the essay "Three Phases" of the essay, Liang Nuqiu pointed out in the afternoon: "It can be neat and energetic after all except branches and sprigs, and it is clear and possessed, simple and powerful. https://www.aceessays.com/add-or-delete-text-material.html