When you have to get some fuel outdoors to boil water for tea, it seems that one can have a valuable experience which is difficult to gain in an indoor tea ceremony as indicated by the anecdote of the tea ceremony in Hakozaki.
これを沸かすための燃料も野に求めた場合、例えば箱崎茶会の逸話が示すとおり、屋内での茶会では得難い体験ともなるようである。