The protagonist Bie Lee Kopf is a "unique" person: even on the most sunny day, he wears rain boots, carries umbrellas and wears warm cotton overcoats. He always hid his face in the erect collar. He wore black glasses and a woolen sweater and blocked up his ears with cotton. In short, he always wrapped himself in the shell, as if he had made a sleeve and was isolated from the world. Including thought, too, because his paranoia simply expelled two students. Under the influence of Mr biyoff, the whole city lived for ten to fifteen years with great fear.

"The Man in a Case" is one of Chekhov's outstanding representative works, Bie Lee Kopf, the real life makes him always feel uneasy, let him fear, in order to be isolated from the world, not to be affected by the outside world, he always wants to pack a shell to himself, to make himself a so-called safe set: even in sunny days He always wore shoes, umbrellas, umbrellas, pocket watch, pencil sharpening knives, all the things that could be wrapped up in the sleeve, and even his face seemed to be in the sleeve, because he always hid his face in the erect collar, wearing black glasses, cotton in his ear and sitting out. When the cart is rented, the driver needs to pull up the hood immediately. This is only the external manifestation of his fear. On the other hand, all the prohibited things made him feel solid and clear, and he felt suspicious and afraid of everything that had not been banned by the government. One of his pet phrases is "never let anything happen." In this short length novel, this sentence has appeared nine times in different ways. It is just like a curse. What is particularly intolerable is that he always visits every teacher's domicile like a ghost, sitting for one or two hours without saying a word, and then disappearing like a ghost. His fear spread like a cancer and spread to everyone around him. He stayed in school for 15 years, and the whole school and even the whole city was controlled for 15 years. No one wanted to resist in such a long time, and wanted to say no words to him. People in the city are afraid of anything: dare not speak loudly, dare not send letters, make friends, read books, dare not help the poor, teach people to read, dare not eat meat, play cards, and dare not engage in any recreational activities. People are like him to curl up in their own sleeves and live to steal a living.

Not only the society at that time, but also the present era. Although it is a pursuit of democracy, is it really true? Maybe this kind of person is not obvious, but it can not deny their existence. Today's laws and regulations are the best examples. Is there a lot of things that are stipulated in it, isn't it to hold us? In Chinese education, it is very small to kill the children's imagination, coercion, impose the only standard answers on the children, no longer give them imagination, and make them unchangeable. Chinese creativity is strangled like this. Thoughts and behaviors are all put in the covers.

Chekhov's creation is basically inclined to criticize realism. He is good at revealing a typical social theme through ordinary daily life. In order to achieve this goal, he uses the art of humor to ridicule the ugly social reality and form a style of his creative writing: humorous satire. In the novel the man in the middle, this novel has been humorous and satirical from beginning to end to show the character of biicoff. At the beginning of the novel, he wrote about the portraits and habits of his life: "he is famous because he wears rain shoes and umbrellas on a sunny day, and must wear a warm cotton coat." His umbrella is always wrapped up in sleeves. The watch is also wrapped in a gray leather cover, and even a small knives for sharpening pencils are also put in the covers. He wrote the ugly face of Bie Li Fu, saying that "the little face like a weasel's face." It also "managed the whole secondary school for fifteen years" and so on. These portrayals are almost exaggerated, however, Chekhov is using this humorous tone to write such a way to kill all new things, not hesitate to use stare, whistle, and other mean means, make the whole city afraid of his small image, appeal to people to change the society.