I am familiar with Cheng, Yin, Liu, and Gao style and all them have the inner foot step straight and outer foot make circle. Also, feet almost rub each other with every step. This look like Yin style stepping with Cheng style upper body and walker did not get indoor instruction.
This is a generous gift of internal fundamentals for Bagua. So eloquently explained and demonstrated. I truly hope you continue this video as one of a series. Beautifully done! Combined with left, center, right channels, meridian, dantien, visceral and energy elements qualities etc... is a life time of material - but I hope you release more even so. There's a great need for this art to be shared and preserved in a society so focused on the external electronic nervous systems of computers.
I have been practising Ba Gua for close to a half century - I've suddenly discovered that the single change and double palm changes are ALL of Ba Gua. Everything you need is in just those two changes. The only problem is the that it takes you several decades to realise this.
I was told that the founder initially taught only 3 palm changes. Not sure how long before there was a change to that, clearly all the folks he taught were already seasoned martial artists that modified the 'way to study' with they way they already taught their existing martial arts, and you can see that in the various branches. I miss Bagua practice with other students.
I know this fool , he is full of shit. I once thought he have great knowledge , but I learn I was wrong . Its OK , he is trying to spread the knoeledge.