Is Medog a traditional skill in China?

The appearance of Medog was a traditional skill of China long before Oracle Bone Inscriptions was discovered, with a history of at least 1,000 years. Simply put, ink wiping is the technology of wiping the characters and patterns on stone carvings or ancient utensils onto paper with ink. Generally, Xuan paper (a hand-made special Xuan paper named "Liu Ji Lian Mian", which is used for inking in Oracle Bone Inscriptions) is first covered on stone tablets, Oracle Bone Inscriptions and other antiquities, and then the characters or patterns on it are imprinted on the Xuan paper with felt ink, and finally the extended paper is removed for preservation.

Medog is also of great value to the study of historical documents and cultural relics. Before the birth of photography technology, those cultural relics that had been damaged or disappeared or could not be collected for various reasons all relied on ink to extend into the field of vision of researchers. Moreover, many cultural relics need to be properly collected and carefully protected, and cannot be touched repeatedly. Through ink extension, researchers can not only obtain the information needed for research, but also avoid repeated contact with cultural relics, so that cultural relics are polluted or damaged. Modern photography technology is very developed, but the details are still not as intuitive and clear as Medog. Medog can clearly display the characters and patterns on stone carvings and ancient artifacts on paper for researchers to use.

Therefore, although thousands of years have passed, the existence value of Medog cannot be underestimated, and it is one of the important contributions to the inheritance and development of Chinese civilization.