I am FengYidong, you can also call me frank, a frank boy from Linfen city in Shanxi province, where was Emperor Yao's hometown. Now there remain a Yao temple for ancestor to worship. After beginning of this new term, I became a grade three graduate students at Chinese Academy of Sciences Shanghai Institute of Technical Physics , my major is optical engineering studying on the infrared optical films. By doing scientific research I obtain good command of theoretic knowledge and experimental skill. For instance, I program and release a WeChat little app during the May Day holiday. From learning related knowledge to complete this app It only took 3 days. About my personality, I think i am easy-going and good at cooperation, because in the past year I have served as chairman of the graduate student, for students to organize a large number of activities, but I have a strong sense of responsibility and I get very serious and cautious when at work. In my free time I like to relax by reading some books about critical thinking.