Medicinal herbs that grew in special environments would usually have very strange medicinal effects. The medicinal effects would even be very singular. It was not necessarily a good medicine. Sometimes, it was even an extremely poisonous poison.
However, sometimes, this kind of medicine with very simple effects would become a good medicine in the hands of those pharmacists, even spiritual medicine, a medicinal material that only he could have. Of course, the demand for such herbs was very low.
