After I received my set and having done quite a few sessions, I can say that EVERYONE who likes drinking tea should try this. Even if you're not into super-obscure chinese teas, the gong fu method can brew almost any tea in a nearly perfect way. It also seems that you can do much less wrong in brewing the tea, since you brew it for such short periods and use little water. I think a scale is really helpful for finding out how much leaf to use, but any ordinary kitchen scale will do.. I use 5g in my 100mL gaiwan. I have tried green tea, oolong tea, black tea, flavored black tea and even rooibos, and it has all worked. Oolong seems even better when I do it in the yixing pot, and I will get another one for black tea as well.
Another nice experience with gong fu was that it got my little daughter who is 2 years into tea. Since the cups and the pitcher are really small, she can serve her own tea and it cools down fast enough for her to drink 3-4 of those small cups.
Now I can't seem to live without 1 or 2 gong fu sessions a day.. And my tea tray is on its way.
Before that, I had never cared for hot tea. Now it looks like a tea shop exploded in my kitchen/dining room (especially since the arrival of the oolong box pass). IMO, as long as it's in moderation, it's much better than candy, ice cream, soda, chocolate milk, etc that kids eat & drink.
