The most difficult ancient poems in history to memorize vary from person to person, because everyone’s memory ability and understanding of ancient poems are different. Some long ancient poems, such as "Song of Everlasting Sorrow", "Pipa Song", "Preface to Prince Teng's Pavilion", "The Difficult Road to Shu", etc. may be considered difficult to memorize due to their long length and complex content. In addition, the language of some ancient poems is relatively obscure and difficult to understand, such as Li He's poems, which may also be considered difficult to memorize. However, for most people, they can gradually master and recite these ancient poems as long as they keep repeating, understanding the poetic meaning, and reciting them in sections. Therefore, whether it is difficult to memorize also depends on the individual's learning method and perseverance. Although these ancient poems are difficult to memorize, they are all classics in the history of Chinese literature and have profound cultural heritage and artistic value. Through continuous learning and appreciation, we can gradually appreciate their charm.