In Taoist philosophy there exists the principles of Yin and Yang - the two perfectly balanced forces which represent manifest reality, or Tai Chi. Yang is the principle of motion, and Yin the principle of quiescence.

These two are most commonly portrayed diagrammatically using the Yin/Yang symbol.

They exist within a circle known as Wu Chi - the empty void which encompasses all.

When quiescence reaches its limit Yang results - when motion reaches its limit Yin results. This is an expression of a constant wave - the endless cycle of 'reality'.

From this cycle of manifest reality come the Five Elemental Forces, which are five levels or types of energy.

All the movements within Qi Gong (Chi Kung) are designed to gently bring awareness to the five different muscular states, and mind and energy states in the body during movement and stillness. By using very simple external movements, and using concentration and gentle effort, the superficial mind is quietened allowing the awareness to deepen.

The same inner work is used here as is used during the Taiji form and five loosening exercises, it is only the external form which is different.