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
The Creature from the Pit A novelisation of this serial, written by David Fisher, was published by Target Books in January 1981. Fisher amuses himself with lengthy discourses on life on Tythonus complete with a glossary. An audiobook was released by the BBC on 7 April 2008 read by Tom Baker as part of the "Doctor Who: Classic Novels" range. The audio book was broadcast on BBC Radio 7 in April and May 2010. "The Creature from the Pit" was released on VHS in July 2002. It was released on DVD in May 2010. The Creature from the Pit The Creature from the Pit is