1944年3月10日,郭沫若的《甲申三百年祭》脱稿,立即引起毛泽东的兴趣,并进而成为全党整风文件。四五月间,毛泽东在演讲中谈道:“我党历史上曾经有过几次表现了大的骄傲,都是吃了亏的……全党同志对于这几次骄傲,几次错误,都要引为鉴戒。近日我们印了郭沫若论李自成的文章,也是叫同志们引为鉴戒,不要重犯胜利时骄傲的错误。” On March 10, 1944, Guo Moruo’s “300th Anniversary of Jiaxu” laid off his work. It immediately aroused the interest of Mao Zedong and became the party rectification document. In April and May, Mao Tse-tung talked in his speech: “There have been times when the party has shown great pride in its history and all have suffered losses. All the comrades in the party have been proud of these few times and made several mistakes. We must quote a lesson from this.We recently printed the article by Guo Moruo on Li Zi-cheng, and also called comrades a lesson from the warning, not to repeat the proud error of victory. ”