Tei Gong is difficult to define but it has to do with thinking of straightening of the spine and the feeling of energy travelling through the spine from the coccyx area to the top/crown of the head. I have also heard some people say that one may imagine the energy travelling out of the top of the head and travelling down the outside of the body.
I don't believe it's necessary to feel anything (energy or otherwise) travelling up the spine. Instead, the most important aspect of tei gong is to aim the coccyx area to the top of the head and be aware of everything in between.
In order to help you get this feeling, you may try to slightly contract the anus and then follow the feeling of contraction up the spine with your mind. Once you get it, stop contracting and just hold the thought of pointing the coccyx area to the top of the head.
If you do it right, you will feel your joints settle down and an added stability in your structure. Try it while holding your arm out, for example in tan sau:
1. Stand in your stance
2. Bring yourself to the tan sau position. It is important to get to this position by focusing on rotating your joints
only - do not use any more muscle than is absolutely essential - this should really feel like you are using no muscle at all - only the joint rotations.
3. Relax ALL your muscles but do not sink - keep your stance the same. (There is more to be said about the stance here, but that is for another article.)
4. Do the above exercise of aiming the coccyx to the top of the head. Remember it's just a thought. Contract the anus slightly if it helps, then let go - this is just to focus your attention in this area. Be vigilant: look for tension in any part of your body and let it go.
5. You should feel a change in your tan sau - almost as if it has more potential and springs forward very slightly. I think of this as the added stability in your stance providing a better foundation for the tan sau.
If your shoulder or back muscles become tense due to holding the tan sau for an extended period of time, just return to the Wu Chi position and relax for a minute.
Jan 2012 Update
While I find the above still useful at times, I no longer really think much about travelling up the spine. Instead, I make sure all my muscles are relaxed. Then I imagine the top of the head pointing at the coccyx and vice versa. At that point, I just try and keep an awareness of the spine being straight, and imagine the spine elongating. Once I have a feeling of where my spine is, and a feeling of expansion, I try to spread this into all my limbs - into the entire body.
Sometimes it can help to imagine the centre of the joint and imagine it rotating. Sometimes this can allow the joints to relax and expand and allow the energy to flow freely. Master Chu Shong Tin suggests imagining a tiny green bean in the centre of the joint, which weights virtually nothing. Then imagine this rotating.
Sometimes I imagine energy travelling from the ground, through my legs, up my spine to the top of my head, and then down to my extremities. But as I said, I don't focus on this feeling for long. I believe the most important thing is to have an awareness of the entire body
from the inside.
Summary
Tei gong is the
essential ingredient in creating a strong, fluid, and alive Wing Chun stance.
It is also a central focus of Zhuan Zhuang training, or Standing like a Post.
-- this page is a work in progress -- please comment so I can add more great info --
Articles and pages about or discussing Tei Gong: