許慎
The earliest artifacts of Chinese inks can be dated back to 12th century BC, with charred materials, plant dyes, and animal-based inks being occasionally used, mineral inks being most common. Mineral inks based on materials such as graphite were ground with water and applied with brushes. The mineral origins of Chinese inks were discussed by the Eastern Han dynasty scholar Xu Shen (, 58 – c. 147). In his Shuowen Jiezi, he wrote "Ink, whose semantic component is 'earth', is black." (), indicating that the character for "ink" () is composed of the characters for "black" () and "soil" (), due to the earthly origins of the dark mineral used in its production.