"Rich" and "novel" materials are a clear requirement for composition in the college entrance examination syllabus. However, when writing essays in the examination room, candidates often encounter the following situations: first, the wonderful materials stored in their minds are limited, and it can be said that "the book is only used when it is used". No matter how hard you try, you just can't think of it; second, the time in the examination room does not allow you to think about it carefully, and those mediocre or inappropriate materials are hastily written into the composition; third, even if you come up with some materials, they are from the next year, which is old-fashioned. A composition that lacks the support of fresh materials will inevitably have empty content, pale language, and single expression.