Doctors' jokes in Ming dynasty

Dai Yuanli, a famous doctor in Ming Dynasty, came to Beijing and heard that a doctor was very skilled and effective in treating diseases. Seeing that his satisfaction is overflowing, he is at a loss. Every once in a while, people who want medicine go to him and say, "Add tin to the decoction." The original ceremony is different, ask the reason. He said, "This is the ancient way." As we all know, the ancient prescription is the word "Huan", which is the sugar fried with glutinous rice. Ha ha! Nowadays, charlatans pretend to be familiar with the ancient prescriptions, but in fact, they generally don't know the iron ears! Dai Yuanli, a famous doctor in Ming Dynasty, once went to Beijing. He heard that a doctor was very skilled and always effective in treating diseases, so he went to see it himself. By chance, I saw a man who wanted medicine leave. The doctor chased him out and told him to add a piece of tin before decocting the medicine. Dai Yuanli felt strange after hearing this, so he respectfully asked the doctor what the reason was. The doctor said that this is just an ancient prescription. He didn't even know that the ancient formula was "Huan", that is, sugar fried with glutinous rice. Alas, nowadays quacks often pretend to be very familiar with ancient prescriptions, and most of them are just people who can't even tell tin from enamel!