There are also cases where master's thesis is not on-the-spot investigation. They directly use the relationship of mentors and second-hand cases, but in this case, the data is insufficient. During the defense, the expert asked you how the data came from, and there was no way to explain it. There are also cases published in periodicals, which include the number of interviews, the general content of each interview, and the amount (pages or pages) of various materials (news, propaganda, interview texts, etc.). ) are strictly stated, because the master's defense is very strict.
Investigate before writing a master's thesis. It's to prepare your paper. It will make your paper flesh and blood. Only in this way can we have evidence and write a good paper. If you haven't studied it, you don't know the theme of the paper deeply enough, and it is difficult for you to write a good paper.