This is the first time I read anything like this anywhere. Thank you for such detail explanation. Does it mean there are still people making tea out of the leaves from one single bush? It seems rather inefficient to me. Would the tea taste very differently from those that are made from many trees?

There are TCM doctors where I live too, but how do you judge which one is good? 

That seems like an expensive tea to me. I have also been using different temperature (not really voluntarily) with a green tea that came through mail yesterday: Tianshan April Mist. I found that hotter water made it too grassy and the texture not as nice as not so hot water. Maybe your way works only for that expensive oolong? We novice drinkers would better follow the guideline?