Fig. 1From: Scientific analysis of tie luo, a Qing Dynasty calligraphy artifact in the Palace Museum, Beijing, ChinaA piece of tie luo in the Palace Museum has writings handwritten by Gu Gao. a Original appearance of the tie luo; b a narrow edge underneath with no fading trace; c traces of reddish pigment on the paper back; d schematic structure of the whole pieceBack to article page