> "Tea Masters living in China nowadays say that boiling
> water must be used all the time even with green teas
> because high quality leaves can handle higher temperatures
> very well. ... *If a tea claims to be high grade but the vendor
> instructions says that boiling water mustn`t be used then
> there is a chance that the tea is not so high grade."
>
> This sounds like horse hockey to me - but have I missed
> something?

It's partly true, and partly false. But mostly, misguided information.
Green tea is delicate for sure. If you used boiling water, that would
basically zap all the vitamins out of the tea. So cooler water should
be used. That's the same with baby formula - can't use boiling water.

Now some green teas can pretty much hold up to hotter temp. water -
but not all can.

Low grade teas though, of course if you used boiling water would come
out bitter and astrigent as heck.