The depth of a literary work depended on the content of the work and the reader's personal experience. Some classic literary works, such as Dream of the Red Chamber, Romance of the Three Kingdoms, Journey to the West, etc., were classics that had stood the test of time. Through rich stories, profound character descriptions, and delicate emotional expressions, readers would be able to think and feel through the reading process. Other literary works such as modernist literature, post-modernist literature, and realist literature also have their own characteristics and styles that allow readers to explore different cultures, societies, and human experiences in the process of reading. If you want to make your thoughts more profound, you can read more books, read more different types of literary works, and accumulate knowledge and insights through reading to improve your level of thinking. At the same time, they could also participate in some literary activities and discussions to exchange and share their reading experiences with other readers to gain inspiration and enlightenment.