I have the original French and, it is my understanding, that Cubicle 7's translation is faithful to the original, so this question still applies. Is there an underlying logic to the martial arts stats in the book and how to create new ones?
For instance, The Bamboo Fence requires Bangshu, Hold at Bay and the Tao of Ten Thousand Hands and it costs 4 chi to activate. Why 4? Is there a logic to this or the authors just applied a value they thought best to the technique? I ask this because I want to create new martial arts techniques and I find the chi costs all over the place.