Is the pen name of the submitted article copyrighted?

There should be, but only from a certain angle. The name Lu Xun is not easy to abuse, obviously its copyright is established; On the other hand, some unknown pen names are hard to say. After all, there are so many pen names in the world that it is inevitable that there will be duplication. It is hard to say whether others intentionally infringe on your rights. In this case, it is difficult for a pen name to have the so-called copyright.