Chinese tea is the best - BUT I still prefer green tea from Japan. Absolutely positively do not add milk or sugar to any of em!
Tea grown near Chiang Rai was somewhat floral, at least the ones I sampled at Choui Fong. Check it out if you can.
Chinese red tea (i.e. black tea to westerners) grown in Yunnan province is spectacular. Easily get 10 gai wan pours from 5 gr of tea with certain types. Aged pu'er very tasty too.
Vietnam grows tea, in the northwest I believe. In Hanoi I was buying the local version of Earl Grey. Very good and a fraction of the price of imported Twinings.
Also quality teas grown in Sri Lanka and Bangladesh from what I've sampled.