In ancient China, a wandering doctor of Chinese medicine would carry a gourd, which was the sign for Chinese medicine. Why so? There was a story.

• 古时候的游方郎中无论走到哪里，身上都要背着个葫芦。把葫芦作为行医的招牌，为什么行医要背葫芦呢？这还有个来历。