According to the query of Hanghao Education Cloud and Baidu Post Bar, Chen Zhan is Gong Jianzhong's math teacher. In 2008, he was awarded the title of excellent teacher in Shaoxing, and participated in the math review seminar for the senior high school entrance examination in Shaoxing on 20 10. His teaching style is rigorous, meticulous, vivid and interesting, and his teaching goal is to cultivate students' mathematical thinking ability and innovation ability. He is strict and caring for students, and is trusted and welcomed by students and parents. In a word, Gong Jianzhong's teacher Chen Zhan is an excellent teacher.