"The Rehmannia glutinosa essence was shrouded in an iron steamer, and the firewood underneath reflected the marks of nine steamings and nine suns. Every time he steamed, his skin became darker, and only his left eye remained the amber color of the fresh rehmannia. When the wine mist rose for the seventh time, a drop of golden tear fell from the gap in the steamer cover - it was a treasure that could protect him from the backlash of eighteen evils, but it was stained with the pain of being steamed for three hundred years."
Purpose: The conflict between pharmacopoeia laws and the origin of medicinal properties