A Tai Chi Chuan performer dong a form, as viewed by an observer, is not in a binary right/wrong state. If it were then everyone would be ‘wrong’ because Tai Chi is that point of perfection that everybody is striving towards. I’m not talking about superficial things that form competitions are judged on, like the wrong height for an arm, or the wrong length of stance. I’m talking about maintaining a perfect state of equilibrium (yin/yang balance) throughout the movement. Constantly going from open to close in perfect harmony. Even the best experts are making little errors constantly as they perform a Tai Chi Chuan form, they’re just so much better than the average person that we can’t see or appreciate them.
But equally, all roads to not lead to Rome. Not everyone doing Tai Chi is on the right track. There are so many side roads you can wander off on, especially with so many other tempting martial arts available on the high street that are a bit like it, but not the thing itself.
There’s one particular side road I want to discuss here that is so close to Tai Chi, but also, so far from it, that you’ll never get there if you go too far down it.
“a hair’s breath and heaven and earth are set apart.”
One thing you’ll find a lot of people, particularly instructors who are into the martial side of Tai Chi, doing is putting their weight into things, rather than moving from the dantien.
So what do I mean? Well, think of it like this: if somebody is doing a Tai Chi form and each time they lift and arm they keep their body relaxed and let their body weight fall into the arm they can generate a significant amount of power, while appearing to remain relaxed – all the things Tai Chi is supposed to be.
It’s impressive, and will convince a lot of people of your awesome martial prowess, but it’s not really how Tai Chi is supposed to work. If you’re committing your weight into a technique then you get a lot of power, but you also get a lot of commitment. As an analogy, it’s rather like swinging a lead pipe to hit somebody. If you make contact then fine, you’ll do a lot of damage, but if you swing and miss then you can’t change and adapt quickly enough to deal with the opponent’s counter.
In contrast Tai Chi is supposed to work like a sharp knife – you can generate power without committing your weight into the technique, so you can change and adapt, just as if you were switching cuts with a blade. The knife is so sharp it doesn’t need a lot of weight behind it.
To get this curious mix of non-committed movement and power you need to move from the dantien. This requires a co-ordinated, relaxed body, that’s driven from the central point. This type of movement really does involve re-learning how to move and is developed in things like silk reeling exercises and form practice.
Learning to put your body weight into techniques is comparatively much easier to grasp, and may even be a useful first step, but it should never become the goal of your practice. It’s only when you come up against somebody well trained in dantien usage that you realise the inferiority of other methods.
From the ever-enlightening 
