A closed school is a school that concentrates teaching, food, accommodation and activities on the same campus. At present, most military academies in China adopt closed mode, and some training schools also adopt closed mode in order to improve the training effect. Closed type is divided into fully closed type and semi-closed type. Fully enclosed requires that all basic necessities of life are within the scope of formulation; Semi-closed will be opened regularly or irregularly. For example, the closed training of sports athletes requires total closure, while the short-term training activities of some training courses may be semi-closed. Pinghe successfully cited a language training method that has been popular in the world for many years and has many successful examples: immersion foreign language training mode. Total Immersion Experience English (TIE): Its theoretical basis is that in a relatively closed environment, students are required to use only the target language in all directions, thus blocking the interference of their mother tongue, forming the thinking habits of the target language in a short time and achieving the purpose of flexible use of the language. Language is a tool for people to communicate, a skill, not just knowledge of learning and research. The purpose of learning English is to communicate. "English is not learned, it is used." Language learning can't be done overnight, once and for all. It takes a lot of practice to master it skillfully. In the simulated language environment, teachers use various methods other than translation to teach intuitively, so that students can form the habit of thinking in English from the beginning, thus improving their comprehensive English application ability. If you really want to master a foreign language, you should forget your mother tongue for a while. Many learners are used to switching between Chinese and English to learn English, which seriously hinders the habit of cultivating English thinking. The best state of language learning is to let students unconsciously forget their strong learning purpose in a natural state of life, a peaceful state of mind and state, and once everyone only aims at communication, exchange and obtaining information, students will make much faster progress. Many people think that when you study English in English-speaking countries, your English ability will improve rapidly. However, due to cultural, living habits, communication skills and other reasons, most China students have been living in the China circle, speaking Chinese for far more time than speaking English. After living abroad for many years, their English is still not good. Practice has proved that closure has nothing to do with geographical location and is directly related to language environment. For language learning, what matters is not the big environment, but the small environment. Never going abroad, immersed in pure English for more than ten hours every day, peaceful students are constantly stimulated by various English information, absorb English knowledge, hone English skills repeatedly, continue to study and live in English, and naturally think and express themselves in English. This model is conducive to cultivating students' English thinking habits and achieving the effect of blurting out. Its actual training effect far exceeds that of foreign training institutions and language schools, and has achieved good results.