The surface of Zhen Qi is a nature phenomenon. The reason Zhen Qi doesnt surface when one is practicing SLT is because
1, the physical body is tensing, physical tensing block the surface of Zhen Qi's grow and its circulation. the physical body needs to be in the state of using only enough effort that it is light and float and glide.
2, The breathing is too forceful. forceful breathing block and stagnated the surface of Zhen Qi's grow and its circulation. an unforceful breathing is similar to the nature breathing while one is almost getting into sleep--- calm, stable, and not noticeable and un-intended.
3, The mind is rigid and forceful. Rigid and forceful intention cause stagnation of Zhen Qi. The mind needs to be in a state of Knowing similar to while one putting one's food into one's mouth without hard focus or attention.
The proper way of doing SLT for holistic training is one must not use any effort at all in moving the body, breathing, and intending. One doesnt use effort because there is nothing to resist or to create. Just flow without using any effort to overcome resistance because one must not create resistance and then overcome it. Instead on needs to create no resistance and just flow with it.
Thus, again, SLT is not IRon Wire of Hung Gar or San Chin of White CRane. SLT practice must be effortless and the degree of effortless is the indicator of progress. it is not a dynamic tension training. SLT is a loose, quiet, nature training targeted towards developing flow within silence and acceptance or implement the Kuen Kuit " comes accept.... using silence to lead action."
the bottom line of SLT practice is to practice how to be loose in physical, quiet in mind, nature in physical action and breathing while doing SLT. There is where the kung fu build up. and that Quiet of mind later when get deeper, one enter the state of Silence.
Everytime on practice a SLT one is actually practice or implement the Kuen Kuit holisticly with action be it one knows or not. and that repeating practice is the cause of the transformation after a while.
However, if one never give up one's using of force. one will never get there. if one keeps using one's mind to Interpretate how things got to be according to one's mind, one will never get there. such as to know lower abdorment breathing is to lay on flat hard bed and let the breathing surface instead of keeping intepretate what is a lower abdoment breathing and forcing the lower abdorment to move according to one's intepretation which is totally off the marks and goes no where.
Thus, in the SLT Kuit from Yik Kam it says
旋迥自然順脈气. or Spining and retrograde naturely accord to the Qi medirians.
通關開竅有奇功. or its purpose is to open up path way and spatial within the physical body.
If the body, mind, and breathing are not place under the Loose, quiet, and nature, the path way and spatial will not surface or show up and thus the training will not get deepen.
These are honest words but due to not many know about it there is no way to train for it. Qi is not a belive, silence is not a holding a thought some way, SLT's design is not up for interpretation as one' s think. But to get to the nature and experience what is going on.
The whole body must not use more then an effort of lifting a silk thread, that is the requirement of doing SLT in the past.
some ask how to do Dissolve, instead of resist or withdraw? while if one practice one's SLT. then Dissolve is similar to let go the cloth or pant one is wearing and let it drop naturally, no rooting, just drop it and the incoming force dissolve. as it says " sung Kai" loose and open. while rooting is reacting.
However, if the joins and spatial is not open up how can one know what to let go and how it will drop?