Jing is one of the Three Treasures – the San Bao – and is the most refined form of Qi; it is life essence, sexual essence. It is Yin in relation to other forms of energy and has a tendency to flow downward towards the genitalia and is related closely with the fluids associated with reproduction. Even though Jing is recognised as being Yin in relation to the other forms of Qi, like all else it has both Yin and Yang aspects – the Yin being the reproductive fluids and the Yang being the saliva. Jing has the qualities of growth and development that gradually increase during childhood, usually reaching its peak between the ages of 20 and 25.
Although the Jing cannot be raised above its original level, by practising Qigong and living a balanced and healthy lifestyle can augment it, slowing down its decrease.
In Chinese Medicine it is said that the Jing creates the marrow, this includes the grey matter of the brain “the sea of marrow”.
There are three external sources of Jing: It is inherited from our parents (genetic strength or weakness); it is influenced by our surroundings and lifestyle – “We are what we eat” Jing being extracted from the refined qualities of our food (Grain Qi) but also with the possibility of it being reduced by toxins (drugs, alcohol, pollution, etc.); and it can be absorbed from one’s sexual partner when practising Taoist sexual yoga.
The Jing is stored in the kidneys, the Lower Dan Tien, and the Exceptional Vessels.
N.B. The word Jing is also used to describe, among other things, “directed Qi” – this is when the Yi (Cognitive Mind) is used to focus or project the Qi as in an Internal Martial Arts strike or during healing work, or used as part of Five Elements Theory as the name of the spirit of Willpower.