The jin that starts from the feet, is controlled by the waist and is expressed in the fingers
Incidentally, that very well known classical statement is not just unique to Taiji; variations are found in a number of arts. It is the path from the ground to the hands. What I call the "groundpath". The people who don't understand the "groundpath" don't understand the basics of I.S. more than superficially. It's worth it to note how often someone puts his foot into it by belittling the idea of the oh-so-obvious term "groundpath". Granted it's not a Chinese term like neijin or pengjin... but it doesn't take a genius to figure it out. Even though Chen Xiaowang's English is limited, he refers to the one jin that goes from the point of contact to the ground.
So in line with the discussion topic about similarities in I.S. between CMA's and Japanese MA's, someone give me an example of where Tohei, Ueshiba, etc., were standing against a push or pull and *not* using a groundpath.
Moving with a groundpath/jin? Linear movement is called "chou ssujin" (pulling silk). Spiralling movement is called "chanssujin" (reeling silk). They are both built from the static one-jin of the groundpath.
There it is and no one can logically argue it, so probably the conversation will go back to the personal.
Well, I will conitnue to point out to people the questionable veracity of an amateur disqualifying everyone's view that doesn't line up with his.
The "ground path" is your term not theirs. Although it's not bad; it is simplistic in it's scope and what it can mean (sort of like Tohei's).
The use of a single ground path instead of the duality in the body at the same time is and has been disputed by men far more accomplished than you or I.
Again I advise people to dismiss the arguing of morons on the net and go pursue the real experts. IP/aiki is much more in depth than what you are going to find in Aikido or those who want you to focus on breath power and pushing or even Tohei's own limited understanding.
And there are methods that can be used for "actual fighting" and all that entails, though it apears many just are not capable of doing or teaching those aspects.
If you want it-it's there to discover.
Good luck in your search