The material of graduation thesis mainly comes from three aspects: books (including books in the library and books bought by myself), online articles and papers from China HowNet. Your school should have a database of China HowNet, and every school has a * * * account, which is paid for, just for the convenience of writing papers. When I wrote my graduation thesis, my tutor provided us with an account number for our reference. The information you find online must be sorted out by yourself and described in your own words as far as possible. The information of Baidu Encyclopedia is also typed by netizens from books or found on other websites. Of course, things in Baidu Encyclopedia can be found on the websites that I have been to, so I suggest not to write Baidu Encyclopedia. China HowNet has many similar references after each paper, so it is enough to find some from them.