System of twelve ordinals native to China
The Earthly Branches (also called the Terrestrial Branches or the 12-cycle) are a system of twelve ordered symbols used throughout East Asia. They are indigenous to China, and are themselves Chinese characters, corresponding to words with no concrete meaning other than the associated branch's ordinal position in the list. Cultural applications of the Branches include a dating system known as the sexagenary cycle, as well as astrology. They are associated with the ten Heavenly Stems in Chinese calendars, and in Taoist practice.