This letter from home is actually a refutation of the idea that reading can only be accomplished by reading and reciting, thereby guiding the children at home to establish the correct attitude that reading must be studied in depth. In the first paragraph, the author points out that it is "the most useless thing to memorize and recite", expressing a clear attitude. In the second paragraph, the author first points out that there is nothing gained from reading in a hurry, and then uses Confucius, Su Dongpo, Yu Shinan and others as factual arguments to argue from both sides, emphasizing that only in-depth study can truly understand the true meaning of the book. In the third paragraph, the author further discusses another drawback of "reciting everything from the past" - "reciting everything": not distinguishing the true from the false and reciting everything, and the result can only be "storing everything in it". "Broken Kitchen Cabinet" demonstrates that reading should be selective and the essence should be selected to give readers a deeper understanding.