Li Yang: He is the founder of Crazy English, a world-famous expert in oral English education, an inspirational teacher of English success, an educational philanthropist in China, one of the top ten young people in China, honorary principals and English consultants of more than 500 middle schools in China, and the head coach of oral English training for volunteers in Beijing Olympic Games. Yang Liang: a famous English trainer in China, a senior oral English teacher and teacher trainer in the United States, a senior teacher certified by the United States Department of Education to teach English to other language users, an English dubbing, an English trainer of Airbus Group in China, and the youngest foreign language trainer among the volunteers of the 2008 Beijing Olympic and Paralympic Games. Li Yongquan: He is a passionate teacher in Beijing, and he is the ace teacher of CET-4 and CET-6 and postgraduate English in Beijing. He is the author of Seven-day Pass of Vocabulary Band 4, Seven-day Pass of Vocabulary Band 6 and Half-month Pass of Vocabulary for Postgraduate Entrance Examination.