Letter to the artist’s father-in-law, Wu Yu

A rectangular piece of aged paper contains dense rows of handwritten Chinese characters in black ink. The text spans the entire surface, with no visible images or pictures. Two red stamps are placed at the bottom left corner. The paper's background is a uniform light brown color with darker edges and some darker spots scattered throughout. The writing fills the page, with some lines of text running vertically along the left edge that are mostly sideways. The overall appearance suggests an aged, historical document.