Parent forces in nature, mother (storage) and father (change or travel) will come together to form a growth force in nature which is in-between the yin and yang. For example a forest is a ‘growth’ force in nature produced by mineral rich dry soil inland (mother) combination with the rain (father). This force always represents the tip or capstone of the trilogy and resonates more closely with supporting life. Forests bare edible fruits and plants. It also tells us which compass direction each trilogy will point while also dictating its entire colour.