1, a fictional character, used for allegory;

2. Real people, but unknown or not prominent enough, so they are not included in the "official history" family;

3. Fictional figures based on historical figures. This may be because the ruler is not allowed to write about him, so the "unofficial history" family was renamed. (Actually, this is unlikely for Gong Ming. )

Of course, even if that person existed, it was more than 2000 years ago. It is unknown how many historical truths have been hastily buried and how many people's truths have been buried. You can think that he does, or you can think that he doesn't. Say whatever you want. In fact, it is also possible. Whether he exists or not depends on whether he is useful to you today and even in the future.