Of course, the following are some sci-fi, fantasy, history, biographies, and other different types of books suitable for girls around the age of 20: 1. The author of the Galaxy Empire series, Isaac Asimov. This was a classic science fiction novel that covered many historical events and philosophical considerations, telling the story of the rise and fall of a future galactic empire. 2. Douglas Adams, author of the Hacker and the Painter series. This is a very interesting science fiction novel about a group of computer hackers who try to change the real world, including hacking governments, arts, literature and other fields. 3. Elizabeth Bronte, author of classic British literature such as Jane Eyre and Pride and Predict. These works described the life of a traditional British family and showed the status and growth of women. They were very suitable for girls around the age of 20. 4. Gabriel García Márquez, author of dystopian novels such as One Hundred Years of Solitude and 1984. These works explored human nature, politics, culture, and morality, which had profound implications for understanding human nature and society. 5. Classic American literary works such as How Steel was Tempered and Gone with the Wind were written by Ostrovsky (How Steel was Tempered) and Scarlet Ohara (Gone with the Wind). These works depicted the American Civil War, the Civil War, the Cold War, and other historical events, showing the society, humanity, and culture of different historical periods. I hope these recommendations can give some inspiration and inspiration to girls around the age of 20 so that they can explore the wider world and deeper thoughts.