Chinese New Year 10-year cycle of heavenly stems. Each of the ten heavenly stems is associated with one of the five elements of Chinese astrology, namely: Wood, Fire, Earth, Metal, and Water. The elements are rotated every two years while a yin and yang association alternates every year. The elements are thus distinguished: Yang Wood, Yin Wood, Yang Fire, Yin Fire, etc. These produce a combined cycle that repeats every 60 years. For example, the year of the Yang Fire Rat occurred in 1936 and in 1996, 60 years apart. Many people inaccurately calculate their Chinese birth-year by converting it from their Gregorian
Chinese New Year ya baat"" (), but the practice is not restricted to "nin ya baat" (the 28th day of month 12). It is believed the cleaning sweeps away the bad luck of the preceding year and makes their homes ready for good luck. Brooms and dust pans are put away on the first day so that the newly arrived good luck cannot be swept away. Some people give their homes, doors and window-frames a new coat of red paint; decorators and paper-hangers do a year-end rush of business prior to Chinese New Year. Homes are often decorated with paper cutouts of Chinese