There are several meanings of syncopated yin in Chinese medicine, including meridian names, syncopated yin disease (a condition caused by the invasion of the syncopated yin meridian by an exogenous pathogen), meridian names, and substitutes for the months of September and October. 1. Meridian name: The syncopated yin is the final stage in the development of yin qi, which begins to restart its transformation to the yang side. In meridian science, there are two syncopated yin meridians, the Hand Syncopated Pericardium Meridian and the Foot Syncopated Liver Meridian. 2. Sycosis: Sycosis belongs to one of the six meridians and is an important stage in the advancement and retreat of evil and yin and yang, with symptoms such as alternating cold and heat. 3. meridian point name: syncope yin yu is the name of an acupuncture point, located in the back of the body of the fourth thoracic vertebrae spinal protuberance next to open 1.5 inches, belongs to the foot solar bladder meridian. 4. Substitute name for September and October: September and October are the time when yin and qi meet, so it is called syncopated yin.