Known as the "big mountain" of Guangzhou, David has been in Guangzhou for more than a decade and often serves as a special guest on Guangdong TV, correcting errors and giving opinions on "driver's license translation", "city street signs" and social phenomena. This "provocative" personality gave David the idea of starting a speaking training institution. In 2007, Dai Wei Interactive Speaking was established with the slogan "100% correction of oral errors". There are four resident teachers of Dai Wei Interactive Oral Speaking, all of whom are from the United States, the United Kingdom, and Canada, and all of them have a bachelor's degree or above and a TESOL/TEFL certificate. There are more than 20 courses dedicated to speaking, including phonetic pronunciation, grammar and vocabulary, journalism, debate, role-playing, fashion, workplace, culture, etc. Students are divided into five levels, including the Introductory, Beginner and Intermediate levels, which use Cambridge International English Course as a textbook to practice daily communication consisting of simple vocabulary and basic sentence patterns; The intermediate and advanced courses are suitable for students who can communicate freely in a foreign language, but there are many grammatical and expression errors in the sentences. "Market Leader" is a textbook for advanced students, and the course focuses on strengthening the oral coping skills in the business field and applying them to real-world business situations. High interactivity, authentic expression, pure pronunciation and interesting teaching methods are the core competitiveness of Dai Wei. Foreign teachers combine painting and music with a diversified teaching mode, integrating vocabulary, grammar and sentence patterns into rich body movements; The content of the lecture runs through Western cultural anecdotes and common colloquial misunderstandings, such as wanting to express gratitude to the teacher after class, "Thank you teacher" is actually not correct, in Western countries it is usually called the teacher Sir or Miss, or "Mr/Miss surname", if the relationship is good, you can call the name directly. Dai Wei's class schedule is very "tight", with classes full from morning to evening, and the class schedule will be rearranged once a week, and the time is very flexible. There is no need to worry about the gap between the trial class and the formal course, Dai Wei's trial session is directly arranged in the formal course, and the class can be taken with the paying students when the time comes, and there are also more than a dozen small trial videos on Dianping, so that consumers can fully experience the course before making a purchase decision. However, Dai Wei is still small at present, with only one store upstairs in the guest village Liying Plaza (the Panyu branch only does 1 to 1); The classroom environment is average, and the design of the integrated desk and chair is not comfortable; The combination of pre-class preview and after-class review is not close enough, and the supervision mechanism is insufficient; In addition to the main course, there is a lack of more output channels. Dai Wei Interactive Speaking is more suitable for students who have strong self-control and have no business requirements for speaking. For students who are very diligent or have an irregular time, Dai Wei has launched an unlimited annual card with a price of 29,520 yuan; Students who have a fixed time and do not need too many class hours can choose the economic annual card, which has a quota of 3 classes per week and is priced at 24,800 yuan; In addition, there are semi-annual cards, quarterly cards, monthly cards and time cards to choose from, and the price of a single class is about 100 yuan, which is very cost-effective.