(Peking University) This generally doesn't matter, but the teacher will ask you what your major is. If the thesis is related to your postgraduate major, the tutor or other interview teachers may ask you questions about the graduation thesis, but generally they will not ask you how it is. As long as you write your own paper, I believe you will have no problem. Come on! Good luck! Furthermore, it is normal to refer to others' experience, which is a learning process!