The Four Great Classics refer to the four tragedies in Chinese classical novels. They are "Dream of the Red Chamber","Journey to the West","Water Margins" and "Romance of the Three Kingdoms". These four works were all classics, not only in China but also in the world, and enjoyed a high reputation. The tragedy of Dream of the Red Chamber was caused by the love tragedy between Jia Baoyu and Lin Daiyu. Jia Baoyu and Lin Daiyu were cousins. Their love was opposed by their families and society. At the end of the novel, Jia Baoyu died of illness and Lin Daiyu committed suicide. The whole story was full of sadness and grief. The tragedy of Journey to the West was caused by the conflict between Sun Wukong and Tang Sanzang. Sun Wukong betrayed Tang Sanzang and fought with the demons in order to get the scriptures. Tang Sanzang was killed by the monster in the process of fighting with the monster. Sun Wukong was disheartened and finally gave up on learning. The tragedy of Water Margins was caused by the conflict between Lin Chong and Song Jiang. Chong Lin and Song Jiang were from the same sect, but the conflict between them led to Chong Lin being betrayed by Song Jiang and eventually exiled to the border. The tragedy of Romance of the Three Kingdoms was caused by the political struggle between Cao Cao and Liu Bei. Cao Cao tried to unify the north while Liu Bei tried to take over the world. In the novel, Cao Cao finally defeated Liu Bei, but the whole story was also full of the sadness of war and political struggle.