The full name of "Manuscript of Memorials to My Nephew" is "A Gift to My Nephew in Praise of the Good Doctor Ji Mingwen". Original work on paper, length 28.8 cm. It is 75.5 centimeters wide and contains 234 characters (and more than 30 scribbled characters). Now in the National Palace Museum, Taipei. In the twelfth year of Emperor Xuanzong's Tianbao reign (753 AD), Yan Zhenqing was squeezed out by Yang Guozhong and became the prefect of Pingyuan (now Dezhou, Shandong). In the fourteenth year of Tianbao (755 AD), An Lushan and Shi Siming raised troops in Fanyang (now south of Beijing), and the famous Anshi Rebellion began. For a time, the counties in Hebei collapsed rapidly, but Yan Zhenqing's Pingyuan County raised the banner of rebellion, raised troops to fight against the rebellion, and was promoted as the leader of the rebel army. At that time, Yan Gaoqing, the prefect of Changshan (now Zhengding, Hebei), Yan Zhenqing's elder brother, sent his third son Yan Jiming to contact Zhenqing and join forces to rebel. Yan Gaoqing and Chief Shi Yuan Luqian designed to kill Li Qincuo, a member of the Anlushan Party and guarding the Tumen (now Jingjing, Hebei) fortress, and recapture Tumen. The situation improved for a while. Yan Gaoqing sent his eldest son Yan Quanming to escort the prisoners to Chang'an to report victory to the group to request reinforcements. Unexpectedly, when passing through Taiyuan, he was intercepted by Taiyuan Jiedushi Wang Chengye. The king wanted to take advantage of the situation and backed up his troops but refused to save him. An Lushan heard that there were changes in Hebei and sent Shi Siming back to Changshan. Yan Gaoqing fought alone and fought hard for three days. He ran out of food and arrows, and the city was broken and captured. Yan Jiming and others were beheaded, and more than thirty members of the Yan family died. Yan Gaoqing was escorted to Luoyang. He was brave and unyielding. He had one of his legs cut off and was executed in Lingchi. It was not until May of the first year of Qianyuan (AD 758) that Yan Gaoqing was posthumously awarded the title of Taibao to the Crown Prince by the imperial court, with the title of "loyalty and integrity". Yan Zhenqing was the prefect of Puzhou at the time. After hearing the news, he sent Gaoqing chief Yu Yan Quanming to Changshan and Luoyang to search for the remains of Ji Ming and Gaoqing. Only Ji Ming's head and some bones of Gao Qing were obtained. In order to temporarily bury these bones, Yan Zhenqing wrote a draft of this memorial poem for his nephew. Because this manuscript was written in a state of extreme grief and indignation, regardless of the clumsiness of the pen and ink, the words fluctuated with the calligrapher's mood, purely a natural expression of the calligrapher's spirit and daily workmanship. This is rare in the entire history of calligraphy. It can be said that "Manuscript of Memorial to My Nephew" is one of the original ink works of great historical and artistic value, and is extremely precious