The German graduation thesis in the postgraduate stage is divided into different directions, but your tone should be different. If you graduate from an undergraduate course, you don't need to consider these issues. As long as you find your favorite angle, you can write anything, whether it's arts and sciences, social customs, hobbies, commercial buildings and so on. I don't know what's bothering you.

Moreover, the requirements of undergraduate thesis are not long, which is only a dozen pages. Find relevant information, first introduce why you want to write this topic, then summarize other people's research results, discuss the problems you want to discuss, and finally make a summary and list a bibliography, and it's over. Not limited to foreign materials, China materials can also be used. Copy east and west ... just can't copy an article completely.