Literary style: Literati often have their own unique literary style, which may be different from the reading materials that readers usually contact, and it takes a long time to adapt and understand before they can enter the state.
Content depth: The works of literary masters usually involve rich life experiences and profound philosophical thinking, which are different from the light stories and simple truths in popular books and require readers to have enough knowledge reserves and reading experience to understand them.
Cultural background: The works of literary masters may be related to specific historical, cultural and social background. If readers don't have the corresponding background knowledge, they may not be able to understand or feel the thoughts and feelings expressed in the works.
Language expression: Characters in literary works usually use various language expressions, such as metaphor, metaphor, symbol, etc., which requires readers to have high language ability and reading comprehension ability to understand.
To sum up, there are many reasons why the works of literary masters are difficult to read. Readers need to have enough psychological preparation and reading ability to deeply understand and feel these works.