In the Five Elements theory (a pillar of Eastern thought since 300 BC), wood generates fire, reduces water, controls the earth, is destroyed by metal. It symbolises spring, nature beginning a new cycle. Everything is growing: new leaves, new flowers, new colours, the sun becomes warmer. Energy rises upwards, the slender blade of grass sprouts, piercing the still hard and frosty ground. Creativity, self-expression, vitality, balance, harmony are characteristic of this element.