It mainly depends on your major, and your graduation thesis is generally selected according to your major direction. Papers on foreign languages like yours are usually about related topics, such as culture and language.

Generally speaking, the direction of literature is relatively easy now, and it is also relatively easy to start; Linguistics is rough, and the process of later defense is hard; Translation needs to be familiar with a large number of words and contents, as well as a high literary literacy; So it is recommended to choose literature.

As for literature, you can try to read the original works and other documents. The key is to write new ideas, and it is best to have unique arguments; You can try to find a special perspective, interpret a work with a certain theory, or compare two works by one author or two Chinese and western writers. In fact, this is close to the comparative study of Chinese.