If you fail the first time, there will usually be a second time. It is necessary to understand the reasons for this failure and the opinions given by the teachers in the opening group, and modify or re-select the topic from these angles.

In the process of communicating with the tutor on the topic selection, the tutor will acquiesce that you have learned the method of verifying the topic selection through the first year training of undergraduate and graduate students. So if you think of something rashly but don't think deeply, you go to the tutor to discuss it, and the teacher will either give no response or criticize it.

There are several reasons for the general topic: the topic is not within the scope of professional research, the research question is worthless, the innovation is not enough (even because the previous literature has not been read enough, and no predecessors have done it), and the feasibility of the topic is not strong.