"If we unite for a long time, we will separate, and if we divide for a long time, we will unite." It sounds easy to read, but scary to think about. After so many wars, many good things have disappeared inexplicably. Some of them can be traced through research, and some of them have not been found at all.
“A scholar who is useless is a scholar.” Poetry and other culture are garbage in troubled times, and a lot of them have been lost.
As a result, many ancient poems have no authors, and many legends with authors have no works.
＝＝＝＝＝＝
There is another situation where no one knows the author from the beginning. For example, there seems to be no author in any of the "Book of Songs". Because it contains folk works.
Including later Yuefu poems, etc., the author is not recorded.
If there is no author, you can only mark it as "Anonymous author", "Unknown author", or "Anonymous author".