Cinnamon Twig, Gui Zhi 桂枝 Gallery Cinnamon Twig, Gui Zhi 桂枝 Cinnamon Twig, Gui Zhi 桂枝 releases the exterior, expels wind and cold; activates Yang, invigorates heart Qi, eliminates fluid retention, unblocks meridians, relieves stiffness and Bi syndrome; unblocks blood vessle, improves microcirculation