Ignatius Teo wrote:
I understand this as "going beyond form" or "letting go of form" -
i.e. not trying to apply a set response to a specific
attack, but to let the technique "happen" of its own accord,
through (my) stillness.
I think there's two ways to look at the idea of "no form". One is that you have practiced a style and techniques so long that you instinctively apply some one or group of the techniques you have at your disposal. The other idea is that your skills of ki and kokyu (and attendant skills/body-tricks) are so automatic and so powerful that when an opponent's force touches you your body automatically neutralizes and responsed (usually with some very strongly developed method of releasing power).
Yiquan supposedly focuses on directly developing this sort of power. Taiji says it's highest level is "receiving power". And so on. In reality, the idea of "no form" almost always means a combination of automatic use of ki/kokyu and automatic application of well-practiced techniques. What I was saying was the "highest level" is an ideal, but it shows the importance of aiming your practice in the development of ki and kokyu skills as part of your Aikido (or other art). My 2 cents, FWIW.