Literary drama refers to Four Treasures of the Study and various literary techniques derived from him. These stationery have different shapes and exquisite carvings, which can be used and rewarded, and become handicrafts in the study and on the case. Among the traditional stationery in China, pen, ink, paper and inkstone are the most basic stationery. Since the Ming and Qing Dynasties, stationery has developed further, and pens, ink, paper and inkstones have appeared.
Wan Wen Walnut is a kind of walnut with collectible value, which is made of walnuts through special selection and processing. Wan Wen Walnut originated in Han and Sui Dynasties, and was popular in Tang and Song Dynasties and Ming and Qing Dynasties. Because of its unique shape, it has medical value and artistic value, and then it has collection value. Walnuts in Wan Wen mainly include walnuts, Juglans mandshurica and walnuts, while Juglans mandshurica includes walnuts.