The Blue Star has conducted numerous experiments and research on Engraving. In order to make Engraving tools more conveniently, various materials were tried.
Paper, bamboo scrolls, bones, metal... Unfortunately, no matter how they engraved those objects, none could become Engraving tools.
It's uncertain how modern Blue Star discovered Magic Power and utilized it; this matter could be related to the Abyss Watcher, hence the information might be blocked.
After producing the 'Engraving machine', which in turn produced nano machines specifically for Engraving, humanity finally gained the power of Engraving.
These nano machines can condense Magic Power, thus forming Engravings.
By injecting nano machines into the body, using brainwave controllers to allow the nano machines to construct an Engraving within oneself and connect it to one's nerves, that is the complete process of Engraving.
