Ms. Zhang has majors in mathematics and physics in both her undergraduate and graduate studies. She was a physics professor at Zhengzhou University, and after obtaining an Ontario teaching license from Mc Master University in 2004, she has been teaching AP Calculus and high school mathematics in private high schools ever since. Ms. Zhang’s teaching style is rigorous and simple, easygoing and tolerant, and she encourages an open and understanding classroom environment. She treats students with kindness and is a teacher who radiates brilliance.