Generally speaking, the number of words in a master's thesis is about 2W. For a graduation thesis, plagiarism depends on what article you copied. If you copy articles from HowNet, it will basically hang badly. If you copy books, and these books don't have an electronic version, there will be no problem. I suggest that if you can't find anything to write, you can borrow some books from the library, or you can Baidu: the General Academic Center, which has the knowledge and skills to write related papers, is quite good.