and vermilion; earliest inks were probably liquids and not preserved. Modern inksticks are generally made of soots from one of three sources, including lacquer soot, pine soot, and oil soot. Soots are collected, then mixed with glue. Higher quality inksticks also use powdered spices and herbs, adding to aroma and providing some protection to the ink itself. The glue, soot, and spice mixture is then pressed into shape and allowed to dry. This process can take 6 weeks, depending on an inkstick's dimensions. The best ink sticks are fine grained and have a light, slightly ringing sound when tapped. They are often decorated with poems, calligraphy, or bas relief, and painted. These particular articles are highly collectable, and often acquired like stamps. The inksticks in highest regard, known as Huīmò (徽墨), contain musk, borneol and other precious aromatics of Chinese medicine. They are still produced today in Shexian (歙县) in Anhui province (安徽). Paper Paper (Chinese: traditional 紙, simplified 纸; Pinyin: ) was first developed in China in the first decade of 100 AD. Previous to its invention, bamboo slips and silks were used for writing material. Several methods of paper production developed over the centuries in China. However, the paper which was considered of highest value was that of the Jingxian (泾县) in Anhui province. This particular form of paper, known as Xuānzhǐ (宣紙), is soft, fine-textured, moth resistant, has a high tensile strength, and remarkable longevity for such a product – so much so that it has a reputation for lasting "1,000 years". The quality of the paper depends on the processing methods used to produce it. Paper may be unprocessed, half processed or processed. The processing determines how well ink or paint is absorbed into the fibre of the paper, as well as the stiffness of the paper itself. Unprocessed papers are very absorbent and quite malleable, whereas processed papers are far more resistant to absorption and are stiffer. Inkstone The inkstone (Chinese: traditional 硯 or 硯臺; simplified 砚 or 砚台; Pinyin: or yàn tái) is used to grind the ink stick into powder. This powder is then mixed with water in a well in the inkstone in order to produce usable ink for calligraphy. The most ideal water for use in ink is slightly salty. Ink was first prepared using a mortar and pestle, but with the advent of inksticks this method slowly vanished. The stone