This is the whole kata of Naihan chi Shodan the creator of Naihanchi kata discover by doing a horse stance you can draw chi from the earth .This is avideo from a 10 dan from okinawa  Doing it look simple but alot is involved while doing this kata
http://www.youtube.com/watch?v=fXENONqcdQs

I show the kata on street fighting with kata  and the lost drills of Naihanch.
I do have footage from 1965 from Tomari village.

Do all practice naihanchi nidan,naihanchi sandan ,lot of the naihanchi shodan are similar with diffirent  cadence I have some videos of diffirent master doing the kata one of them started doing karate in1930 but he was old the time film was made that never been sold threw magazine but really dont have equipment to put it on internet .I like to see your footage that you talk about  bushido it sound interesting

It would be geat if all of use teach some Movements by movement applications If every one join in this could be Bunkai central! lets kick this off by, acceptence without condemnation of any ones examples. O.K.

Now as most of use know, Nahanchi shodan has changed from school to school. But TYR's DVD of Oyata"s Shodan, in the first posture after the salutation where he is in a Nahanchi stance (horse) And one open hand is crossed over the other open hand (left over right). you can see Oyata's fingers of the left hand wrap around the right hand. this has meaning ( lost to most modern schools today) DYNAMIC TENSION.
  The right hand pulling towards the right as the left hand holds the right and is pulling towards the left. This creates Dynamic tension and when used, gives added speed and power to that first strike-block. this is old school stuff, and has not been given to modern versions of Nahanchi. But it may be added to your Shodan easily. Now in the old school days, Nahanchi was the first kata you would learn and also this would be the first technique learned by all beginers. Therefore, Dynamic tension will be found and applied to all later Kata as a root foundational technique in the schools that practice Nahanchi. Oyata's Nahanchi shodan is close to the oldest form of the Kata, When practiceing this technique Dynamic tension, the goal is, as you release, and your hand flys in to the first posture, the hand should move so fast that you will hear a whistling sound! that means the goal has been met.  Now you will see Nahanchi shodan kata depending on the school step away from the attack, step into the attack and use a cross over step to attack. The application should be practiced in all three steps, not just one. Oyata version steps in to the attack, which is to cutting off the final step of the attack, this is a clue to find out what the other steps are fore.