Optics in the School of Science is purely theoretical, and employment is really average. If you want to be a teacher in a university, it's very difficult without a doctorate. Changchun Institute of Optics and Mechanics has only a few positions every year, which makes it difficult to enter. It is suggested that the science postgraduate entrance examination should be transferred to the engineering side as far as possible, which still has advantages. Electro-optics is a department of the School of Electrical Engineering. In terms of instruments, many people are generally engaged in measurement and control, and many of them come out to enter the space institute.