Exploration of herbal medicine started upon the incipient of early agriculture [1], meanwhile, the processing methods have been continually improved for higher efficacy, reduced toxicity,and simplified application.The earliest written records of herbal processing can be found in Huangdi Neijing, but the descriptions are too brief to be illustrative.The recent unearthment of the processed Rehmannia in wooden lacquer boxes from Haihunhou tomb (59 BC, Western Han Dynasty) in Nanchang, Jiangxi Province (N29°02′2.33″, E115°56′45.35″), provided an unprecedented opportunity to research early herbal processing methods [2].