An intriguing reference which some feel can be a kind of marbling is located in a compilation done in 986 CE entitled ???? (Wen Fang Si Pu) or "Four Treasures of your Scholar's Study" edited because of the 10th century scholar-official ??? Su Yijian (957-995 CE). This compilation incorporates details on inkstick, inkstone, ink brush, and paper in China, which are collectively called the 4 treasures on the examine. The textual content mentions a kind of decorative paper called ??? liu sha jian indicating “drifting-sand” or “flowing-sand notepaper" which was manufactured in exactly what is now the region of Sichuan.