Greetings,
I’ve translated a passage from Yang Zhenji’s book, _Yang Chengfu Shi Taijiquan_ (Guangxi Minzu Chubanshe, 1993) that specifically addresses empty stances. I’ve previously expressed some reservations about the 70/30 wording as a firm prescriptive guideline to be taken literally. I think of it more as a pedagogical device, a rhetorical or metaphorical way of speaking (something like the familiar “four ounces/thousand pounds” aphorism). When I do the form, there are no gauges or instrumentation of any kind present. The following lends some support to this perspective.
~~~
Front-Empty Rear-Solid Stances: This kind of stance method is divided into left and right empty stances. The way of doing the left empty stance is that the right foot plants solidly, the left foot lifts upward toward the left front direction, extending out a half-step, using the ball of the foot to touch (dian) the ground, as in the stance of the White Crane Displays Wings posture, [or] by using the heel of the foot to touch the ground, as in the Fist Under Elbow posture. The left and right feet change positions when forming right empty stances. This kind of stance method requires that the rear foot sit solidly. The front foot is not entirely empty; it also possesses some sustaining force (zhicheng de liliang). In the left and right empty stances of Yang Style taijiquan, the front foot is never entirely empty (kong: void, hollow), but must always share responsibility for the weight of the body. The solid foot’s share of the weight is a bit more, the empty foot’s share of the weight is a bit less. The ‘more’ and ‘less’ depend upon the height of the frame, and take the upright alignment of one’s weilu (coccyx) and the naturalness of one’s turning movements as the measure of appropriateness.
In the stance methods of Yang Style taijiquan, there is no formulation of the kind where ‘the solid foot’s share of the body’s weight is seventy percent, the empty foot’s share is thirty percent.’
There is still another kind of front-empty rear-solid stance in which the rear foot is solid, and in which the entire sole of the front empty foot contacts (zhuo) the ground, for instance, Step Back Dispatch Monkey.
~~~
I want to be clear that I don’t post this to in any way challenge the validity or usefullness of the 70/30 notion—I think the objective in that is to make it clear that there is indeed something “there” in the empty foot. What I’ve rendered as “sustaining force” in the empty foot is zhicheng de liliang. Zhicheng means to sustain, support, or to prop up. Liliang is strength or force.
Comments encouraged,
Louis
[This message has been edited by Louis Swaim (edited 02-17-2001).]

) will show that local tensions, etc., are being removed to allow the "flow" to be better. That being said, it should be pointed out the jin can be propagated through some fairly coarse postures, also, because the mind is what arranges jin.