Yan Jingjing, Ph.D. in Western Economics, School of Economics and Business Administration, Beijing Normal University. Both undergraduate and master are mathematics majors, and their grades have always been among the best. They have a solid foundation in mathematics and can combine mathematics with economics well. Teacher Yan has served as a teaching assistant in econometrics and macroeconomics for many times, and as a training teacher in many training institutions. Rich teaching experience, well received by teachers and students.