Lu Xun's " Three Book Houses " referred to the three flavors of " book, brush, and ink ". Lu Xun believed that books were the ladder of human progress, the source of cultural inheritance, and the ocean of knowledge. He believed that everyone in society should have some books to enrich their knowledge and improve their thinking. "Pen" referred to the ability to write. Lu Xun believed that literature was an important way of inheriting human culture and an important means of expressing thoughts and emotions. He believed that only through writing could he express his thoughts, expose the dark side of society, and bring more enlightenment and help to people. "Ink" referred to ink. Lu Xun believed that ink was the foundation of writing and an important medium to express thoughts and emotions. He believed that only by writing in ink could he express his profound thoughts, convey his sincere feelings, and make people better understand and accept him. "Three Books" symbolized Lu Xun's deep understanding and love for books, writing and ink. He believed that only with these three important tools could he write better works and bring more enlightenment and help to people.