What's the limitation of Tantra? The separation of yin and yang based on a lowering of the Shen Frequency

This  question is more about actual physical contact - this has a name called "Kareeza" - but for sending energy out of the pineal gland then you don't want any physical contact for the lower body. The frequency of the energy needs to be raised up.  So I told http://guidingqi.com about my "tantric" experiences and he said the problem is that the energy was rising up the FRONT of my body when that energy went out of my skull. I had been erroneously thinking the energy was rising up the BACK of the body. So to purify the energy back into "Yuan Qi" then the energy has to go DOWN the front - and this is what turns the "yang qi" (with substance) back into "yuan qi" via the lower tan tien.
 
So with tantra energy exchange - the problem is that it is just a weak lower level of "yin qi" energy and NOT the spiritual "yuan qi" energy. So yes "yin qi" energy can heal people but it's not nearly as powerful as doing "yuan qi" energy healing. So by having the energy go UP the front - that is based on the "separation" of yuan qi back into yang qi and yin qi. So the female does give out "yin qi" energy also based on the lower shen frequency (shen is the carrier wave as light). So then the qigong master has to raise up that shen frequency again of the yin qi energy. So this is why the original qigong master says he does not practice tantra - since the frequency of shen energy taken in by the male is a low frequency energy that then has to be raised up again through purification.
 
So the healer is sending out higher frequency yin qi energy (based on the shen going out of the skull) while taking in lower frequency shen energy. And therefore overall is losing yuan qi energy (which is formed by the higher frequency yang qi energy).

So through tantra it is possible to keep raising the frequency of the person who is receiving the yin qi energy via the pineal gland shen frequency - as the female's energy is taken in and recycled back out via the pineal gland - this cycle keeps going to a deeper level. Finally the Yuan Qi energy is activated but only as a "taste" of the yuan qi - the formless magnetic bliss through the right side of the heart.

Master Nan, Huai-chin thus calls tantra limited to "emptying out the realm of bliss" and then just started to open up the "realm of form."

So for example there is a critique of the Dalai Lama as teaching tantra as being inherently misogynist through objectifying the female body. This does not differentiate the shen energy frequency based on giving or sending out higher frequency shen out of the skull versus the lower frequency shen blockages that are say sent out as a liver blockage as anger or the lust of the perineum and lower body, etc.

So then with tantra with a female - if the energy keeps getting recycled to higher frequency then the only way it can continue is for the female to also go into the Emptiness - beyond any personal lust - as well as the male. This is detailed more in Bill Bodri's article on tantra.