Wang Shian's withdrawal from the proposition group needs someone to replace him. The national postgraduate mathematics proposition group will not be put forward by the same person all the year round, but will be replaced regularly. Wang Shian, 1987-200 1, was the head of the mathematics proposition group of the national postgraduate entrance examination and a senior expert of the mathematics proposition group of the postgraduate entrance examination of the Ministry of Education. Former Dean of Graduate School of Beijing Institute of Technology, head and professor of applied mathematics, mathematics expert enjoying special allowance from the State Council, visiting professor at Columbia University, University of South Florida and new york University.