As it is stated in Daoist theories: once an energy reached its peak and is most abundant, it starts to weaken; once it reached the bottom and is most weak, it starts to rise again. Never does any energy completely vanish though. The YīnYáng 陰陽 symbol portrays this energy shift explicitly. Fitting DōngZhì 冬至 into this pictorial concept the black Yīn 陰 segment occupies the biggest part before the Winter Solstice where the