Zou yin Master of Applied Linguistics, University of Hong Kong, China, CET-4 and CET-6 Worry-Free Program. Teaching is characterized by being good at combining test-taking skills with strength improvement, combining teaching practice test system with appropriate teaching method system, effectively guiding students to understand and master knowledge points, so as to achieve rapid grading and pass the exam. Teacher Zou of Grade 4 and 6 is the nickname of Zou Yin's personal social account.