You can be a math teacher or work in a scientific research institution. For students who graduated from Tsinghua University's Mathematics Department, they can be math teachers after graduation. To be a math teacher, they need to have enough academic level and teaching ability, and the students who graduated from Tsinghua have this ability. And you can also work in scientific research institutions, including key laboratories and scientific research institutes. In these institutions, graduates from the Department of Mathematics of Tsinghua University can participate in major scientific research projects and cooperate with top scholars at home and abroad to carry out cutting-edge scientific research.