The continuous flow of Yin and Yang transformations creates all the changes which affect the whole world.

The Yi Jing holds the works of the Chinese sages who, for thousand of years, have attempted to systematize these permanent variations of energy.

Yin et Yang give birth to both a son and a daughter who, in turn, give birth to a son and a daughter.

The eight persons so obtained, are symbolized by an ideogram composed of (full line Yang or broken line Yen) called a trigram. Their permutations give birth to 64 pairs called the hexagrams, which are the basis of the study of change and of the art of divination of the Yi Jing.

	Qian, The Heaven - The Father. Yang maximum power. Inspirational strength determination and will power. Northwest - Night - Beginning of winter		Dui - The Lake - The Youngest Daughter - watchfullness - attraction - Open hearted - Turned toward others - West - Evening - Autumn
	Li - The Fire - The second daughter. Explosive energy. Power of light and cleverness. South - Midday - Summer		Zhen - The Thunder -The Eldest Brother - Support of the Family - Energy, power and speed of Yang. East - Middle morning - Spring
	Xun - The Wind - The Eldest Sister. Sweetness, patience, courage. Southeast. End of morning. Beginning of Summer		Kan - The Water - The Middle Son - Quiet - self retreating - north - midnight - middle of winter
	Gen - The Mountain - The Youngest Son. Internal calm. Serenity. meditation. Northeast - Dawn - End of Winter		Kun - The Earth - The Mother - Yin full power, Earth energy, fertility, support. South-west - Afternoon - Autumn

Chinese Tradition recognizes also five fundamental motions of energy which are associated with the five elements known to compose the Universe. Each element gives birth to the following in a fixed and dynamic cycle of creation. Every element controls and destroys another element in a destructive cycle conforming to the permanent flow of Yin and Yang.

Fire represents ascending energy and is associated with the triangle.

Earth is an energy which revolves on itself and its associated with the square.

Metal represents the state of contraction of the energy and corresponds to the sphere.

Water represents the falling energy and is associed with curves.

Wood is the expending energy and is associed with the rectangle.