It was difficult to directly answer which of the four masterpieces had the most profound literary background because everyone's literary background was different and they might have different views on the same thing. However, from a historical and cultural point of view, the author of 'Dream of the Red Chamber' had the most profound literary background. "Dream of the Red Chamber" was a Qing Dynasty novel that described the aristocratic society of the Qing Dynasty. It had high artistic and cultural value. The novel depicted a variety of characters, showing the customs of the Qing Dynasty aristocratic society and through delicate descriptions, showing the complexity and variety of human nature. At the same time, the novel also contained profound philosophical and cultural implications, such as "human feelings are the article","things change and the stars change," and other famous sayings, which reflected Cao Xueqin's literary thoughts and artistic pursuit. Dream of the Red Chamber was not only a great literary achievement, but it also had an important position in the history of culture. It is an important part of Chinese culture and a classic in the history of Chinese literature. Thus, it was generally believed that the author of 'Dream of the Red Chamber' had the most profound literary background.