The characteristic of Cinnamon Twig Decoction syndrome is the disharmony between nutrient and defensive qi. The exterior pattern of "disharmony between nutrient and defensive qi" is a new summary by Zhongjing. In terms of theory, this is a creative theory. Cinnamon Twig Decoction can unblock yang and harmonize yin, harmonizing nutrient and defensive aspects, containing within dispersion, and using tonification to unblock. Clinically, based on this characteristic, I use Cinnamon Twig Decoction to treat abnormal sweating in Zabing, including spontaneous sweating, or absence of sweating, or profuse sweating in certain areas, blocked sweating in certain areas, as well as chilblains, low-grade fever, measles, winter dermatitis, cutaneous pruritus, rhinitis (especially allergic rhinitis), etc., as long as it fits the diagnosis of disharmony between nutrient and defensive qi, without interior heat, and with a thin white tongue coating, it has good efficacy. Additionally, with modifications according to the syndrome, its application is even broader. For example, adding Fossil Bone and oyster shell to this formula is called Cinnamon Twig Decoction plus Dragon Bone and Oyster Shell, originally used to treat seminal emission in men and dreaming of intercourse in women, now used to treat neurosis, sexual neurasthenia, enuresis, etc., which can benefit true yin, astringe floating yang, and regulate opening and closing. For late-stage bronchitis in children [third stage], with body deficiency-type pathogen lingering, nutrient deficiency and defensive weakness, symptoms such as fever, cough, profuse sweating, pale complexion, listlessness, pale and tender tongue, thin white coating, and the appearance of heart yang deficiency deteriorated pattern, using Cinnamon Twig Decoction plus Dragon Bone and Oyster Shell to tonify deficiency and support yang, harmonizing nutrient and defensive aspects, is also a variation of the method.