What does gay literature mean?

It is an article about love between men, that is, gay. Similarly, Danmei novels are also bl, but the authors of gay novels are generally gay, while Wenfeng is more realistic and generally depressing, while the authors of Danmei novels are basically female, with beautiful and diverse writing styles, including martial arts and ancient genres. There are many realistic modern sweet stories. Some of them have unrealistic descriptions, such as having children, brothers and fathers, and some have a bit of a national BL tendency.