Outstanding Visiting Scholar of Columbia University and University of Cologne, the first Globally certified IELTS Speaking Trainer of British Council, former Teacher of New Oriental Group for 10 years, IELTS Speaking 8, passed TEM8 with high scores, BEC Higher, Shanghai Advanced Interpreter, English interpreter of The Americas pavilion in Zone C of 2010 Shanghai World Expo, he mainly taught IELTS and TOEFL sprint oral courses and created many full marks oral cases, which received high feedbacks from students.