Wait: you had to go to Taiwan to try this? I've mixed wine with diet Coke, diet Sprite, club soda...and of course ice. Ice is your friend when the wine comes from a box (my preference, otherwise known as cardboardeaux).
I remember being in a motel room with DH in the middle of American Siberia (next to a WalMart), trying to open a bottle of wine without a wine opener. Great hilarity ensued. DH suggested running over to WalMart for a cheap wine opener, to which I replied that a cheap WalMart wine opener is a box cutter. More hilarity. We finally managed to pry it open with some sort of utensil, filtered the bits of cork through our teeth and drank. It really would have been better with diet Coke.