I quite like the unsweetened tea, although it was a bit of a shock the first time I encountered it, having been raised with the Canadian version (the homemade version is black tea with lemon juice and sugar). Cold oolong and jasmine are delicous.
I even like 'milk tea' which is cold tea made with powdered milk and sugar, sometimes plain (i.e. green, red or oolong) but often with flavouring added - mango, lychee, pineapple, chocolate, coffee. It's sold in the 7-11 in 500 ml milk cartons.
Regarding vegetables - much of Chinese cooking, raw vegetables are regarded as unhealthy (and often are, depending on the fertilizing and farming technique), so you only get vegetables that have been cooked in some way, including about 20 different varieties of green leafy sauted and steamed veggies, ranging from cabbage like to spinach like to lettuce like. I've been served steamed lettuce and stirfried cucumber, among other things.