Ming Dynasty (1368 - 1644)
In
1376, a scandal happened because officials use seal paper to cheat.
In
the 14th century, a famous Ming Dynasty painter Wang Mian introduced stone into
seal making since it is much easier to carve than metal or jade. Artists started
designing and engraving seals themselves and the craft gradually developed into
an art form.
In
1574, Wen Peng invented a new knife technique to engrave Hsin and Kai Shu.