瓜蔞皮 trichosanthes peel Pericarpium Trichosanthis
- Gua Lou is a little melon. The “pi” is the peel of the gua lou melon. It is used to stimulate the flow of qi in the chest. When the qi-energy is not flowing well in the chest, it causes one to sigh frequently possibly associated with the sensation that they can’t take a deep breath.