Interesting Bodi maybe a good word is that the rules are refined. We don't break them or bend them but we continually refine them to our liking. The more refined we get them (whether written or subconsciously) the better we can manipulate them

It signifies progression not learning rules which then need to be forgotten or often disregarded but always refining them.
I like that
Here is the picture of a penjing tree by Qingquan Zhao
zhao.jpg
I have been a stickler for a nice set of roots it really does add the element of age to a setting. Yet in Penjing this is not necessary. I am very naive with penjing but I believe the penjing don't need to look like trees but can even have animal shapes the imagination is king and anything goes.
The rules we have been discussing such as a radial root spread is meant to copy what an ancient tree has.
Zhao's tree is very appealing but I found the more I looked at it the less I accepted the roots that would be very improbable on a natural ancient tree. But then if I was to change the roots I would then find the triangle foliage top even more off putting and would want to change that. Confusing as I do like the tree as a refreshing change
It is funny that when discussing bonsai in a chat session one day at BT I was convinced to chop the trunk of a hornbeam. Then we where looking at another tree and it was remarked as perfect. I stated that the trunk had as little taper as the trunk they told me to chop so why was that great and mine needed chopping? Oh that is a Penjing tree they said

My quite obvious question was "well why could mine not be penjing as well
I am since very happy with this tree that I chopped but now wonder ????
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It's too bad your in such a hurry cause the stories I could tell you, Bushels and baskets of stories, hole crates full of stories. But if you can spare a moment I will tell you one story.