檔案:Letter to Filial Gentleman Guo Tingping, by Su Shi.jpg

The "filial conduct" as mentioned in the letter, written by Su Shi, refers to the daily activities of a person who's mourning the passing of a parent, indicating that the recipient Guo Tingping was in such a period of grief. From the contents, it appears that the letter was written in 1075.

This letter was written in semi-cursive script on light pastel-colored paper covered with a turtle-shell pattern and a small turtle figure inside each of the hexagonal motifs. Although the rites of mourning called for simplicity in every aspect of daily life, Su Shi still chose a kind of decorative paper pressed with this refined turtle-shell pattern, perhaps taking into consideration that ancient inscribed funerary stones in the shape of a turtle were decorated with a turtle-shell pattern.