The reason why Journey to the West was classified as one of the four great masterpieces was because it had a very high status and influence in the history of Chinese literature. It was a classic in the history of Chinese literature. Here are some reasons: The story is wonderful: Journey to the West tells the story of Sun Wukong, Zhu Bajie, and Monk Sha protecting Tang Sanzang's adventures in the West. The story is full of dramatic and suspense, and it is one of the most famous narrative subjects in Chinese literature. 2. Full-bodied characters: In Journey to the West, there are many characters with distinct personalities and full images, such as Sun Wukong, Zhu Bajie, Monk Sand, Tang Sanzang, etc. These characters have their own characteristics and show many virtues and values in Chinese traditional culture. 3. High literary value: Journey to the West reflects the politics, economy, culture and other aspects of ancient Chinese society with its unique narrative method, rich literary techniques and profound ideology. It has high literary value and historical significance. 4. A wide range of influence: Journey to the West was widely welcomed and influenced not only in China but also around the world. It had been translated into many languages and adapted into movies, TV series, anime and other forms, which were loved by readers all over the world. Therefore, as a classic in the history of Chinese literature, Journey to the West had an irreplaceable status and influence. It was an appropriate evaluation for it to be ranked as one of the four great masterpieces.