It is in my YouTube above. That is the common denominator of ancient Chinese internal art.
As for your trying to link things with tibertian art, I don't think the tibertian art has the same practice with the Chinese based on evidence.
This is Tibetan art mixing some Chinese art. It is not the same design as ancient Chinese art which deal with the Chinese 12 medirians
Having watched your video I did not see where it was clearly stated what the common denominator, as you put, was mentioned. I fail to connect your thoughts to anything tangible, perhaps if you were to cross reference to an existing method based upon the ancient Chinese internal art, we all would have a clearer picture.
No disrespect here, but your reference of the Mian Li Zhen Quan is not the standard for representation of the 6 exercises. The exercises consist of 6 movements performed 3 ways, and there are many interpretations based upon the different lineages of Bon, Lama, Mizong, Dao and Chan that passed them on. These exercises are considered by many as the well spring from which Qigong, as we know it today, was formulated, they themselves more than likely having a foundation in Yoga. Typically weaved into a method of Yuan Gong that can clearly be seen in arts such as Bagua Zhang, Taiji Quan, Rou Quan, Luohan Quan etc. These exercises are generally basic training, not unlike how Ba Duan Jin is used, commonly taught to initiate monks of the Buddhist, Daoist, Bon and Hindu faiths. The history is long and detail spanning several thousands of years. If you have the time please look into it, I think you'll find it interesting.
As far as the meridians, again that is dependent upon the lineage that passed it on. The Bagua, Wu Xing, Taiji, Jiu Men etc. theories vary greatly in interpretation depending on the faith and lineage. Rarely have I seen two the same from different lineages. It is all very interpretive IMO otherwise there would be more regulation and standardization. Funny thing is all the different approaches seem to work, clouding things even further. In order to come to an understanding and a consensus I think further detail, clearly illustrated and explained with references to existing accepted theory would be helpful, do you agree?