What is the difference between Angong Niuhuang Pill in Hong Kong Tongrentang and Beijing Tongrentang?

The founder of Tong Ren Tang is Le Xianyang. Le Xianyang,No. Zunyu, a native of Ningbo, Zhejiang Province, moved to Beijing during the Yongle period of the Ming Dynasty. Three generations of ancestors practiced medicine. He has been exposed to it since he was a child. He widely read ancient books and devoted himself to the research and production of prescription drugs. The pills he made are all made of pure authentic materials, and the production is precise and rigorous, and the curative effect is remarkable after the patient uses them.

He regards practicing medicine and selling medicine as the highest pursuit of preserving health and serving the society. He said: "medicine is the most important thing for those who can keep healthy and save the world." Le Xianyang founded Tong Ren Tang Pharmacy in the eighth year of Qing Emperor Kangxi (1669).

More than 400 kinds of Chinese patent medicines in Tongrentang have been tested for many times, and the formula is reasonable, the dosage is appropriate and the curative effect is high. In the late Qing Dynasty, there were four major drug stores in Beijing: Tianhui, Tiancheng, Longsheng and HSBC. These four major pharmacies all have transactions with Tong Ren Tang, and they all use goods first and then pay.