清朝时,安徽有个叫郑经的药商,从药农手中把药材收购上来,加价批发给那些零售药材商铺,从中赚取一些利润。药材的行情很不稳定,时高时低,有的时候,药商按正常价位从药农手里收购的药材,没过几天,市场行情就跌了,很多药商不管市场行情如何,依然按正常价位把药材批发给零售药材商铺,至于商铺 During the Qing dynasty, there was a drug dealer named Zheng Jing in Anhui that bought medicinal herbs from the peasants and peasants and increased wholesale prices for retail pharmacies to earn some profits. Quotes are very unstable medicine, high and low, sometimes, the drug dealer at the usual price from the hands of farmers to buy herbs, a few days, the market fell, many drug dealers no matter how the market still press The normal price of medicine wholesale to retail medicine shops, as shops