Is there a new technique for Medog Oracle bones?

Application of Bletilla striata water in the early expansion of Oracle bone inscriptions. Bletilla striata is a Chinese herbal medicine. Soaking it in warm water will produce a weak glue. The bletilla striata water prepared that day was used for rubbing, which had little erosion on the Oracle bones. But after a long time, the colloid of Bletilla striata water will become thicker, and even after only one day, it will stick to the Oracle bone. Moreover, insects especially like to eat this plant gum, which will eventually pollute and corrode Oracle Bone Inscriptions, leading to weathering and cracking. So in the past, while spreading Oracle Bone Inscriptions, it would cause some damage to the Oracle bones.

Considering that the use of Bletilla striata ink painting will pollute the Oracle bones, the researchers put forward a method of replacing Bletilla striata water with pure distilled water or special deionized tertiary water. This kind of water makes the rubbing paper stick tightly to the Oracle bone, causing little damage to the Oracle bone, and the trace water absorbed by the Oracle bone can slowly evaporate naturally. This is a great innovation of Oracle Bone Inscriptions ink extension technology, which is equivalent to raising the traditional ink extension technology to a new height.

Some Oracle bones are good in appearance and hard, so it is no problem to use hair brushes. However, some Oracle bones, such as those with weathered skin, are inevitably not firmly adhered to rubbing paper and can only be brushed gently. The head brush is not strong enough, and some words can't be displayed. If you still use the knocking method, it will cause damage to the Oracle bone. The researchers tried to use a horsehair brush. A horse's mane is a lock of long hair on its neck. Horseshoe brush is neither hard nor soft, just right, it will come out as soon as it is brushed, and it will not hurt the Oracle bones, which is another technical improvement. Under the condition of "protection first", the use of horsehair brush has promoted the finishing work in Oracle Bone Inscriptions.