The design of Cinnamon Pearls is based on the classical remedies Guizhi Tang (Cinnamon Decoction) and Ling Gui Zhu Gan Tang (Poria, Cinnamon Twig, Atractylodis Macrocephalae and Licorice Decoction), the first of which is the leader of all formulas in Zhang Zhongjings 2nd century herb primer, Shanghan lun (Treatise on Disorders Caused by Cold).