To stimulate the graduates' enthusiasm for scientific research, Prof. Yao specially sets "Achievement Award" which is presented annually to students who make outstanding achievements in research and academic activities. So far, 22 graduates have been awarded. It is highly praised by all the teachers and students; besides, it greatly inspires the students' enthusiasm for conducting thorough investigations about the leading-edge topics and promotes the scientific research atmosphere. The Achievement Award and other scholarships of Tsinghua University can be applied at the same time. The graduate students can win both Achievement Award of the Institute and scholarships granted by Tsinghua University.