Wang Qingtian: Ph.D. in Mathematics, University of California, USA. A well-known professor of mathematics in Taiwan Province Province, a pioneer in teaching reform. Advocate students to study easily in a happy atmosphere; In teaching, students are constantly encouraged to grasp efficiency and exert their potential. The main works are: the more you play, the smarter your grandson is; The smarter you play, the smarter Indian mathematics; 450 thinking games made by Cambridge University for students; 600 puzzle games to improve IQ; Everyone can have a super memory; Wait a minute.