Dear professors and interviewers,

My name is xxx, it's my great honor to have this opportunity to introduce myself to you. I graduated from xxx University last year majoring in xxx. Then, I've been working as a xxx in company xxx for one year.

In this process, I have learned a lot, not only in professional skills, communication skills but also the working attitude. However, I still feel that there is much room for improvement. Therefore, I decided to challenge myself and apply for the postgraduate program of your university. I believe that your university has a profound academic atmosphere and can provide me with the excellent opportunity to enhance my knowledge.