Emoeror

Emperor He of Han.In AD 89 he was promoted with the title of Shang Fang Si,an office in charge of manufacturing instruments and weapons; he also became a paperwork secretary In AD 105,along with help from an imperial consort Deng,Cai invented the composition for paper along with the papermaking process though he may have been credited with an invention of somebody from a lower class.Though tools and machinery of papermaking in modern times may be more complex,they still employ the ancient technique of felted sheets of fiber suspended in water,draining of the water,and then drying into a thin matted sheet.For this invention Cai would be world-renowned.posthumously,and even in his own time he was given recognition for his invention.