Am I right in thinking there is a concept in some Chinese martial arts where the two hands work together when fighting, so one is gripping/pulling/pushing while the other is hitting? And is this called "husband and wife hands"? Taking the analogy that good hand skills are like a good marriage. A partnership between two different people that complement each other to be greater than the sum of the parts. Or is it called "Mother and Father hands"? Again the analogy that one part of the pair is doing one thing while the other is doing something else but they complement each other to work together? Or have I just made that up from watching too many martial arts films?