Distinctions

• Member of the Chinese Academy of Sciences
• Fellow of the Third World Academy of Science
• The National Science and Technology Congress Award, 1978
• The 3rd Award, National Natural Science Award, 1982
• S.S. Chern Prize of Mathematics, 1986
• The 2nd Award, National Natural Science Award, 1987
• The Third World Academy of Science Award in Mathematics, 1993
• HLHL Prize, Science and Technology Prog r ess Award , 1995

Research Interests

• Nonlinear functional analysis and partial differential equations
• Morse theory and its applications to differential equations.