Jinfeng holds a Master's Degree in Probability Theory from Capital Normal University. She has 10 years teaching experience. Prior joining BQZHS, she taught in Cambridge International Curriculum Center of Beijing Normal University, she has been teaching IGCSE, A-Level mathematics, AP Calculus AB, AP Calculus BC and AP Statistics for more than ten years. She excels in designing interesting classroom interaction activities to effectively aid teaching, and a fostering class environment that yields good result - more than 80% of her students scored above 4 on AP exams.