This video mainly introduces the story of Darentang Pharmaceutical Factory, as well as the efficacy of traditional Chinese medicine produced by Darentang. Darentang is a descendant of the 300-year-old "Yuejia Laopu ", founded in Tianjin in 1914 by Ye Daren, the 12th generation of Yue family. This video specifically introduces honeyed pills，Wuji Baifeng Pill, Angong Niuhuang Pill, Qinggong Shoutao Pill, Niuhuang Qingxin Pill. Finally, it tells the story of Darentang's characteristic abacus and its transformation from shop to factory.