Ephedra

There was an old man digging medicine, no children, and accepted an apprentice. Who would think that this apprentice is so arrogant that he has only learned a little bit of fur and despised the master. Sometimes, the money for selling medicine is not given to the master, and it is spent secretly by himself. The master was heartbroken, and said to the apprentice: "Your wings are hard, let's set up another door." The apprentice didn't care: "Okay!" The master said uneasy: "However, there is a medicine that you can't just sell to it. People take it." 　 "What medicine?" "Leafless grass." "What's the matter?" "The roots and stems of this grass are used for different purposes; the stems are used for sweating and the roots are used for antiperspirants. If you make a mistake, you will die! Live it?" "Remember." "You recite it again." The apprentice opened his mouth and recited it again, but he didn't even think about it when he recoiled.

Since then, the master and apprentice broke up, each selling drugs. The master is not in front of him, and the apprentice is more courageous. Although he doesn't know many medicines, he dares to cure any disease. Within a few days, he was killed with a leafless grass. The family of the deceased was willing to give up, so they caught him and went to see the magistrate. The county magistrate asked, "Who did you learn from?" The apprentice had to say the name of the master. The county magistrate ordered someone to find the master and said, "How did you teach? Let him put people to death!" The county magistrate heard this and asked the apprentice: "Do you remember? I'll listen to it." Said: "The stem is used for sweating and the root is used for antiperspiration. If you make a mistake, you will die." The county magistrate asked again: "Does the patient sweat or not?" Medicine?" "The stem of the leafless grass." The county magistrate was furious: "It's just a cure! The patient has already sweated and used sweating medicine, can it not kill anyone?" After all, he ordered the apprentice to beat the apprentice forty. Sentenced to three years in prison. The master is okay and released in class.

The apprentice spent three years in prison before he became honest. He found the master and admitted the mistake, and said he had changed his mistakes. The master saw that he had changed, so he stayed behind and taught him the teachings of medicine. Since hitting here, the apprentice is very careful when using "leafless grass" again. Because this kind of grass caused him troubles, he named it "troublesome grass", and later because the root of the grass was yellow, it was changed to ephedra.