There were many books that could improve one's language skills, and it depended on one's needs and interests. The following are some common recommendations for improving your language skills: 1 Harry Potter and the Sorcerer's Stone: Reading this book can help you learn how to improve your vocabulary and language skills. Dream of the Red Chamber: Reading this book can help you learn how to use language to express your feelings and thoughts. 3 The Little Prince: Reading this book can help you learn how to express your thoughts and feelings in simple and clear language. The Analects of Confucius: Reading this book can help you learn how to use language to express your moral views and thoughts. 5 Journey to the West: Reading this book can help you learn how to use rich vocabulary and language to express the plot and theme of the story. These are some of the classic books on improving your language skills. Of course, there are many other excellent books to choose from. It is recommended that you choose books that you are interested in and learn from them to improve your language skills.