Zhang Yizheng, Wu Yanli. The list of teachers in Fujian Silent School in 2022 shows that only two teachers, Zhang Yizheng and Wu Yanli, teach abacus mental arithmetic in Silent School. Therefore, in 2022, Zhang Yizheng and Wu Yanli, professors of mental arithmetic, appeared in Fujian Silent School. Silent School is a brand-new interactive learning application based on offline silent education institutions. Traditional teaching is to let students absorb knowledge through books and teachers' lectures and practice by doing problems repeatedly.