1.1 Introduction
Channel systems
Each primary channel, together with its pertaining ‘secondary
channels’, forms a complex, multi-layered organisational unit, a
‘system’. These systems comprise the various relationships and
connections among each other as well as with the eight extraordi-
nary vessels (➞1.7, ➞Chapter 5). They support the harmonious
regulation within the body. There are 12 channel systems (hand
taiyin, hand yangming, etc.), each of which includes the following:
● a primary channel(jing zheng) (➞1.2) with an external and
internal pathway, which enters its pertaining zangfu-Organ
● a divergent channel(jing bie) (➞1.3)
● a sinew channel(jing jin) (➞1.4)
● a great luo-connecting vessel(luo mai) (➞1.5).
In turn, the cutaneous zones(pi bu) (➞1.6) wrap around the
whole channel system.
1.1.4 Qi Circulation and the Channel
System
What moves with and within the channels?
The channel system represents the ‘pathway of the Qi’. In
acupuncture many schools of thought work with the True Qi
(zhen qi), which, according to Maciocia (1989), represents the
final stage of a process of Qi refinement and transformation: the
Gathering Qi (zong qi), acted upon by the Original Qi (yuan qi)
as a catalyst, becomes True Qi (zhen qi), which manifests in its
two aspects, the Defensive Qi (wei qi) and the Nutritive Qi (ying
qi). According to Larre and Rochat de la Vallée (1986), the True
Qi is regarded as the sum of all Qi mechanisms and/or forms
of Qiin the body. In other words: if there is a balanced and har-
monious flow in the channels, this can be called True Qi (zhen
qi). It means that which circulates in the ‘here and now’. The
sum total of all forms of Qi in their correct alignment is called
Upright Qi (zheng qi) and forms the counterpart to Evil Qi (xie
qi), for example to pathogenic factors or counterflow Qi.
Forms of Qi
Essence (Qi) (jing qi)
The Essence (Qi) acts within the organism and, according to
some authors, to some extent also in the extraordinary vessels
(➞1.7). It represents the combination of Early Heaven Essence
inherited from the parents, which, according to many schools of
thought, is stored in the Kidneys and has a relationship to the
Life Gate (mingmen), and the Later Heaven Essence of the
Middle Burner. They support and complement each other.
Original Qi (yuan qi)
The Original Qi (yuan qi) is often described as the active form
of Essence (jing), circulating in the channels and spreading to
the whole organism with the help of the Triple Burner. Like a
catalyst, it is the dynamic driving force which wakens and sus-
tains the functional activity of all organs and structures. It has a
pre- and a postnatal component. Therefore its proper functioning
is dependent on the supply of acquired Qi derived from water
and food supplied by the Middle Burner. The Original Qi can be
directly accessed and influenced at the yuan-source points
(➞ 8.1.1) or at the points Ren-17 (danzhong/shanzhong),
Ren-12(zhongwan) and Ren-6(qihai).
Gathering Qi (zong qi)
According to Larre and Rochat de la Vallée (1986), the Gather-
ing Qi (zong qi) is formed in the centre of the thorax when the
essences derived from respiration (Great Qi, da qi) meet with the
food (shui gu, from Grain Qi (gu qi) and water) and are set in
motion through ancestral mechanisms by the first postnatal
breath. Like an ‘engine’, it dictates the rhythm and circulation, it
controls respiration and it regulates the heartbeat. It does not cir-
culate itself, but is like a ‘Sea of Qi’ that ‘collects’ in the centre
of the thorax behind Ren-17(danzhong/shanzhong). This sea
contains the water from all the rivers (e.g. the vessels), resem-
bling an inexhaustible reservoir that does not overflow but redis-
tributes all its water supplies.
Defensive Qi (wei qi)
The wei qiis the body’s Defensive Qi. Thus it defends the body
at the level of the skin, the fascia and the muscles. In relation to
the Nutritive Qi (Ying qi), it is a more slippery and less pure form
of Qi that moves dynamically and quickly through the body like
a guard. Its root lies in the Lower Burner, where it is produced
by the mingmen-Fire (Life Gate fire), so that it has a consider-
able genetic or constitutional component. Essence (jing) and
Original Qi (yuan qi), which are stored in the Lower Burner
(according to many schools in the Kidneys), are involved in the
formation of Defensive Qi (wei qi), therefore also playing a role
in the defence against Exterior pathogens. Additionally, the wei
qiis constantly being replenished with pure essence, formed
from food by the Spleen and Stomach in the Middle Burner. It
is dispersed throughout the body by the Upper Burner. Proper
functioning of the wei qitherefore depends on all three Burners.
Nutritive Qi (ying qi)
The Nutritive Qi (ying qi) is the result of a purification and/or
distillation process of pure, clear origin. Compared to Defensive
Qi (wei qi), it is more Yin in nature. It nourishesthe whole body
and is its ‘building substance’, thus often translated as ‘con-
structive Qi’ or ‘building energy’.
Circulation of Defensive Qi (wei qi) and
Nutritive Qi (ying qi)
Circulation of Defensive Qi (wei qi)
In chapter 43 of the Su Wenthe wei qiis described as flowing
‘outside of the mai’ (the channels and vessels). However, it cir-
culates in part along the channel pathways, moving in the space
between the skin and the muscles – the cou li.
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