Congratulations to Professor Yau Shing Tung, being the first Chinese mathematician who has been conferred the prestigious Marcel Grossmann Award in recognition of his achievements for the proof of the positivity of total mass in the theory of general relativity and perfecting as well as the concept of quasi-local mass, for his proof of the Calabi conjecture, and for his continuous inspiring role in the study of black holes physics. Professor Yau is one of the most celebrated and influential mathematicians in the world. He made fundamental contributions to differential geometry which have influenced a wide range of scientific disciplines, including astronomy and theoretical physics.