The last ancient poem of the Romance of the Three Kingdoms was 'Reminiscence of the Ancient Red Cliff'. " Remembering the Past at Red Cliff " was the ending of the Romance of the Three Kingdoms. With the Battle of Red Cliff during the Three Kingdoms period as the background, it described the fierce battle between Cao Cao and Sun Quan at Red Cliff and Cao Cao's defeat. In this article, the author used vivid words and historical events to show the political, military, and cultural characteristics of the Three Kingdoms period so that readers could have a deeper understanding of that era. In this article, the author also mentioned the cultural phenomena of the Three Kingdoms period, such as poetry, calligraphy, etc., so that readers can feel the cultural atmosphere of that era. At the same time, the article also expressed the reflection of war and history through the background of the Battle of Red Cliff, emphasizing the importance of peace and harmony. " Remembering the Past at Red Cliff " was an ancient style essay filled with a sense of history and cultural meaning. It was the most classic piece in the Romance of the Three Kingdoms.