In general terms Kyo relates to emptiness (desiring a need) & Jitsu relates to fullness (filling /compensating the need)
E.g. When your stomach feels empty (Kyo) you eat to satisfy and fill your desire (Jitsu),

    Kyo & Jitsu relate to Full or Empty conditions, these conditions are perceived via touch during treatment.
Like Yin & Yang they Co-exist with each other, if you find a Jitsu point then somewhere else you will find a  Kyo point.
    The body will always try to maintain a balance, if a Jitsu condition arises due to an energetic gathering of Qi then a depletion (Kyo) of energy (Qi) manifests elsewhere. This difference sets up a gradient of stress between the Kyo/Jitsu points, by holding the two points a flow from the Jitsu to the Kyo will be felt, this in its self is a partial treatment.

    A Kyo condition is felt as weakness, looseness of muscle, mild pain alleviated by pressure, pale skin, cold skin, loss of muscle tone with lack of resistance to pressure, the areas feel empty, slow to respond and below surface
    Kyo is a bit like water flowing along a river bank, halfway along there is a break, the water flows along until it reaches the break and then disappears into the break away from its natural course, only when the break is filled or strengthened can the flow (QI) continue .
Dispersal of a Kyo condition will only make it weaker, Kyo needs to be supported by strength (direct pressure).
Holding a Jitsu area with one hand whilst the other is held over the Kyo area speeds up the process of refilling the Kyo area.

    A Jitsu condition is felt as a hardness, swelling, stiffness, pain on pressure, there may be redness, stagnation of  QI  causes stiffness or an inability for the QI to move which could to be localized like a gathering of energy at one point.
Excess Jitsu (yang heat) or Excess Kyo (yin cold) leads to cramp, ticklish spots, protrusions ,immediate response or high resistance to pressure.
    Jitsu is a bit like a path with a locked gate Half way along it, you can walk to the gate however it is difficult  to continue your walk to the other side if you do not have the key, the harder you push the gate the more the gate resists. Only by gently unlocking or dismantling (dispersing) the gate can your walk (QI) continue, breaking the gate with force will cause permanent damage, (if you force a Jitsu point with too much pressure it will become even more Jitsu and unnecessary pain results for the client, just supporting with the warmth from your hand is sufficient).

Holding a Kyo area with one hand whilst the other is held over the Jitsu area speeds up the process of emptying the Jitsu area.

KYO & JITSU in Treatment
    Hara is a quick and accurate guide to treatment, so are the Yu & Bo points, so even just by finding / working the most Kyo & most Jitsu points an effective start in the priority of treatment can begin.

    Many postural differences are due to Kyo & Jitsu imbalances, i.e. upper body stronger than lower half, uneven left & right sides of the body, shoulders backwards or forwards, hands or feet turned in or out, so even by visually observing a person reveals a lot about their Kyo/Jitsu condition and which meridians and adjustments need to addressed.
Kyo & Jitsu