1, Xu graduated from the Department of Mathematics of Xiamen University, with 7 years of teaching and research experience and only 5 years of teaching experience.

2. The builder of Xu Zuoyebang 196 has accumulated 654.38 million students in the class, with the average score of 30+ for the students who have taught and 28+ for the students who have taught. Xu is also slightly better at improving scores.