"A Letter to my Nephew," or Ji Zhi Wen Gao, by Yan Zhenqing (颜真卿), is a unique piece of calligraphy in that it was not intended to be an artistic masterpiece. Rather, it is a draft of a letter expressing his grief and sorrow at the loss of his nephew. However, this raw and unfiltered expression of emotion is what makes the work so powerful and enduring. Written in a mix of Running Script (xingshu) and Cursive Script (caoshu), Ji Zhi Wen Gao reveals the artist's inner turmoil and his capacity for emotional expression. It is a unique, personal, and emotional piece.