Apart from the fact that Sanchin is a southern chinese White Crane method, and a passing familiarity with the basic choreography, I don't know much else about Sanchin, or how it might be different/similar in kokyu terms, much less if it would be incompatible with Aikido kokyu. I only mentioned Sanchin as another example of a kiko/qigong method - and not to start a fight.
