The "Four Treasures of the Study" (文房四宝) are revered tools in the world of Chinese calligraphy and painting. These cherished items include the brush (毛笔), essential for creating graceful strokes; the inkstick (墨), used to make ink; the inkstone (砚台), for grinding ink; and the rice paper (宣纸).

1. Brush (毛笔): These brushes are typically made from animal hair, such as goat, rabbit, or weasel.The brush hairs are bound together and attached to a bamboo or wooden handle. Different brush types offer various flexibility and thickness, allowing artists to create a wide range of strokes, from bold to delicate.

   
   

   
   

2. Inkstick (墨): Inksticks are made mainly of scoot and anminal glue, sometimes with medicinal scents added. They are ground against an inkstone with water added to create liquid ink.

   
   

   
   

3. Inkstone (砚台): Inkstones are usually made from fine stone or ceramic. They have a flat surface for grinding and a depression or well for containing ink. 

   
   

   
   

4. Xuan paper (宣纸): is produced in Xuan Cheng, Anhui province. It is made from the local sandalwood tree fibers. The paper is soft, fine-textured, possesses excellent ink-absorbing properties. At the same time, it inherits high tensile strength, and is extremely long-lasting.