Yes, at present, no drugs in the world, including the miraculous "Prince's Blessing," have undergone double-blind experiments.
That is to say, the "Quasi-doctor's Operations Manual" will not feature any recommended treatment drugs. So what's the point of compiling this manual?
Joseph simply smiled and shook his head: "In fact, the greatest role of quasi-doctors is disease prevention.
"For example, as long as they inform villagers to drink boiled water during outbreaks of cholera and dysentery. Of course, it's best to always drink boiled water.
"Cleaning up stagnant water around homes before and after the rainy season and using mosquito nets can effectively reduce the incidence of malaria.
"Avoiding raw meat can prevent various parasitic diseases...
"During cold seasons, cover your mouth and nose with cloth before going outside...
"After an injury, do not apply random things like dirt to the wound, but clean it with phenol...