In 1987, a pair of framed letters of criticism suddenly hung up in the home of Mr. Cao Yu, a 77-year-old famous Chinese dramatist. The letters were written by the famous painter Huang Yongyu when Cao Yu was in his teens. Zhong Huang Yongyu pertinently and sharply criticized Cao Yu's creations after liberation. "You are my most respected senior, so I have to be strict with you! I don't like your drama after liberation, not even a single one. Your heart is not in the drama, you have lost your great psychic gem, and you are swayed by your position. Wrong! From an ocean to a small stream, you are mixed in the unwilling artistic creation, just like drinking strong tea at night to wake up from the chaos." The reason why Cao Yu framed this letter was also because of his own feelings about liberation. Unsatisfactory creation. Before liberation, his works "Thunderstorm", "Sunrise", "The Wilderness" and "Peking Man" were hailed as one of the "Four Famous Plays". His artistic skills have reached a state that so far no one has been able to surpass. At that time, he Only 31 years old. In comparison, after liberation, he created three plays: "Bright Sky", "Courage of Swords" and "Wang Zhaojun". All of them were restricted by the political situation, and their artistic charm was not as good as before. Among them, Cao Yu's second play "The Brave Sword" was created in 1960, which coincided with China's most difficult period. The Communist Party of China advocated self-reliance and hard work. A number of plays with the theme of Gou Jian, the king of Yue, lying on the firewood and tasting the courage of gall were produced in the drama industry. Cao Yu also and Mei Qian Therefore, Mao Zedong jointly created "Lying on the Firewood and Tasting the Brave", and the book written by him was renamed "The Sword of Courage". Cao Yu is well versed in the three flavors of drama. In his creation, his talent and creative spirit won the praise of his collaborators. "The Brave Sword" shows the return of his personality in creation, as well as his high-spirited artistic creativity, especially the creation of characters, which is quite skillful and touching. However, the series of movements in the 1950s, especially the expansion of the anti-rightist movement, left Cao Yu and other intellectuals with lingering fears. He said that he also felt troubled while creating, as there seemed to be an invisible wall around him, and he might encounter something again. In 1960, "The Brave Sword" was performed and received rave reviews. However, after Zhou En came to see the show, he said that "The Brave Sword" has its advantages, mainly its success, but I was not that moved. The author seemed to have been influenced by something. The constraints are caused by new superstitions. The new superstitions have bound our thoughts, so writers dare not write. They have many hats and write very little, but they seek no faults and do not seek merit. "The Brave Sword" came to an end after 57 performances. The country's gallbladder fever has also been greatly reduced. In his later years, Cao Yu framed and hung letters of criticism from his close friend Huang Yongyu. He actually wanted to encourage himself to write good works again. Unfortunately, he was old and even though he had put in a lot of hard work, it could only be an unfulfilled wish. In the subsequent storms, Cao Yu did not suffer much impact due to the protection of Zhou Enlai. However, this drama master has no more masterpieces to come out. Whether it is a pity or a pity, this is not Cao Yu's personal fate, but the general fate of the cultural people of that generation.