"The letter from the captain of the capital of Zhangye" is a piece of red fabric 21 cm x 16 cm square, with a embroidery tie in the middle, and the six characters "the letter of the captain of the captain of Zhangye" written in ink on the front. It was unearthed in Juyan. Not many seal script ink ink from the Han Dynasty has been unearthed. This work has a square structure and a thin, square and hard pen.
