The Wei, Jin, Southern and Northern Dynasties is the era of China's literary consciousness, and the most obvious sign of literary consciousness is the emergence of literary theory. During this period, academic thoughts gradually diversified, and the literariness of literary creation also increased. Jian 'an is the champion of the year. The representatives of Jian 'an literature are mainly three Cao and seven Zi. The seven sons of Jian 'an mainly include Kong Rong, Chen Lin, RoyceWong, Xu Gan, Ruan Yu, Angelababy and Liu Zhen. Among them, RoyceWong has the highest achievement. His masterpiece is "Ode to the Building". In addition, the famous female scholar Cai Wenji is famous for her masterpieces Treatise on Febrile Diseases and Eighteen Beats of Hu Jia. The most important representative of Jian 'an literature is San Cao. The so-called "Three Caos" are Cao Cao, Cao Pi and Cao Zhi. These three people have made great achievements in literature and exerted great influence on the literary world. Later generations are collectively called "Three Caos". Father and son, who has the highest achievement? Zhong Rong of the Northern and Southern Dynasties once gave such an evaluation in Shi Pin, saying that Cao Zhi's works are top grade, Cao Pi is middle grade and Cao Cao is inferior. After the Tang Dynasty, the literati's evaluation of Cao Cao's works generally improved a lot. But the problem itself is not very scientific, because there is no comparability among the three people, and the literary achievements are not in one aspect. Cao Cao's literary achievements are embodied in the literati's Yuefu, such as his short songs and Ghost's Life. Cao Cao created a new atmosphere of Jian 'an literature, and his poems were vigorous, handsome and elegant. Short songs are Cao Cao's representative works. "Life is a song of wine, such as morning dew, and it is difficult to go to Japan." He lamented that life is short and time flies, and expressed his grand ambition of recruiting talents and unifying the world. Cao Pi's achievements mainly focused on literary theory, which was the first of its kind. Unfortunately, there are only 10 articles in this book, and now there is only one article left, which is called Essays. Cao Pi also has a work called Ge Yanxing, which is the earliest seven-character poem of literati discovered at present. Cao Zhi's achievements mainly focus on five-character poems and ci fu, and he developed the five-character poems of literati to an unprecedented height, marking the full maturity of the five-character poems of literati. Once upon a time, there was a very proud scholar named Xie Lingyun, who worshipped Cao Zhi very much. He said that Cao Zijian once monopolized eight fights, leaving two fights, one for himself and the other for all the literati in the world. Cao Cao also appreciated Cao Zhi's talent, but Cao Cao still handed over the political power to Cao Pi, which is also the political vision of Cao Cao. Cao Zhi is a good poet, but not necessarily a good emperor. Xelloss later became Wei Wendi, and Cao Zhi repeatedly changed his fiefs. Later, although he was a prince, he could not move freely. Apart from the power struggle between the two brothers, they all liked the same woman, Zhen Shi, who later became the wife and queen of Wei Wendi Cao Pi. But I don't know why, but it was killed by xelloss, and the bad blood between brothers deepened. There is a saying that Cao Pi wanted to kill Cao Zhi and deliberately made things difficult for him by writing poems, asking him to write a poem within seven steps, so Cao Zhi wrote the famous seven-step poem. Cao Pi sounds particularly unkind, but as we all know, power struggle and brothers killing each other are very common phenomena. The most famous is the Xuanwumen Rebellion of Emperor Taizong and Li Shimin. Li Shimin killed almost all his brothers in one fell swoop, but Li Shimin did not incur any prejudice. Perhaps people are hostile to Cao Pi because Cao Zhi's talent is really a pity. There are two versions of the seven-step poem at the earliest. In Shi Shuo Xin Yu, the first edition is six sentences. Boiled beans are soup and fermented grains are juice. Fermented grains burn in the kettle, and beans cry in the kettle. This is the same root. What's the hurry? The second edition condensed these six sentences, saying, boil beans and burn beans, and beans cry in the kettle. This is the same root, why fry each other. Cao Zhi's prose and ci fu also show high ideological and artistic quality. There are more than 100 poems handed down from ancient times, among which "Ode to Luoshen" describes love, and the image of beauty is said to be described by Zhen Shi. The three Cao and seven sons of Jian 'an literature inherited the realistic tradition of folk songs in Han Yuefu. Their poems are generally written in the form of five-character poems, and their style is vigorous and generous, which we call "Jian 'an style".