I got this graphic/sheet with a wooden foot massager I purchased. Hadn't really taken much notice of it but glad I kept it now.

Also glad that it has been useful.

As to the "complexity" of it, all I can say it that I have had a similar situation with some of the bagua charts used in Feng Shui. They are either very simple (sometimes a little too simple) or too complex.

I guess we will learn as we go. :-)