The Dream Pillow Tapir Teacher was her representative work in modern China, Onmyoji, which was published in 2011. It told the story of an ancient Japanese Onmyoji and a monster. The novel is still in the works and the author has not stopped writing.
I'm not sure which book you're referring to because this sentence itself is not common in novels. However, as a fan of online literature, I can tell you some general information.
In novels, this sentence usually appeared in gender-confusing or anti-traditional plots or in the redefinition of a character's gender. In this case, this sentence may cause readers to think and discuss, so the appearance of this sentence in the novel also has a certain cultural and symbolic meaning.
However, if you are referring to a sentence in a book, I need more specific information to provide you with a more accurate answer.
One benefit is that it can expand your vocabulary. Novels often contain a rich variety of words and expressions. Another advantage is that it can enhance your imagination. Through the vivid descriptions in the novel, you can create pictures in your mind. Also, it can expose you to different cultures and ways of thinking as many novels are set in various cultural backgrounds.