Derentang is an old-fashioned drugstore with a history of nearly a hundred years. At the beginning of the 20th century, Mr. Le Daren, who was born in a medical family in Beijing Tongrentang, chose a location in the south section of Chunxi Road in Chengdu to open his business. Because his shop has the same name as Chengdu Tongrentang, it was renamed "Darentang". The shop has a front shop and a back shop, mainly engaged in authentic Chinese herbal medicines such as ointments, pills, powders and Chinese herbal pieces. With the sincere service of "genuine goods, childlike innocence", it has been widely praised by people from all walks of life in southwest China. 1948, Darentang was renamed Derentang. Successors followed the shop instruction, adhered to the business principle of "practicing benevolence with fellow practitioners and saving the world for health", and permeated this principle into every detail of business activities, which made Derentang drugstore develop from a traditional ointment and pill store to a multi-store comprehensive pharmacy dealing with drugs, medical devices and health services, and it has been a hundred years.