This is by far the most famous drink in all of China. Getting the green tea might be difficult as many supermarkets don't have it. Arizona green tea works fairly well, but the best is a chinese grand called "tong yi" that makes bottled sweet green tea. The mixture is pretty much the same ratio as Gin and tonic, Rum and coke, etc depending on the drinker. But the green tea hides the whiskey very well and you can't taste the alcohol.