He Rui of Xi 'an He Dan Education is an excellent math teacher. In the annual national high school mathematics league, among the winners of the first prize in Shaanxi Province, He Dan students account for more than one third. In the college entrance examination, more than 80% students can get full marks in mathematics.

He Dan Education has been focusing on middle school training for more than 20 years, and has rich teaching experience and excellent professional level. There are teaching experts and special-grade teachers in colleges and universities as the main lecturers. In the past 20 years, we have made good achievements in teaching results.