Calligraphy is the primary Chinese art form, equal with painting. As the forms of Chinese literature developed and many changes made, the forms of the written characters also changed. Though different in style, Chinese calligraphy is an art that expresses inner spirit and outer beauty. The stamps take as their main designs, five masterpieces of Chinese calligraphy recommended by the National Palace Museum. A brief description of the designs is listed as follows:2.00 A Letter of 〝K'uai-hsueh Shih-ching〞 by Wang His-chih, Tsin Dynasty Semi-cursive script, ink on paper 23 cm × 14.8 cm, Album leaf 4.00 An Eulogy of Ni Kuan by Chu Sui-liang, Tang Dynasty Standard script, ink on paper 24.6 cm × 170.1 cm, Handscroll,6.00 An Inscription on Fan An's Poem 〝LAKE TAI〞by Wen Cheng-ming, Ming Dynasty Clerical script, ink on paper 15.7 cm × 15.8 cm, Album leaf8.00 Autobiography by Huai-su, Tang Dynasty Cursive draft script, ink on paper 28.3 cm × 755.0 cm, Handscroll10.00 A Poem of the Sung Dynasty by Ch'ang Piao, Sung Dynasty Seal script, ink on silk 24.5 cm × 11.1 cm, Album leaf10.00 A Poem of the Sung Dynasty by Ch'ang Piao, Sung Dynasty Seal script, ink on silk 24.5 cm × 11.1 cm, Album leaf