Carefully slice beef into thin bite size pieces, across the grain of beef. Marinate beef in soya sauce, wine and salt. Shred broccoli.
Place oil in wok and heat to smoking point. Quickly stir-fry beef in it, no more than 3 minutes. Remove beef to a platter and reserve.
Add the broccoli to wok, half cup water, sugar. Turn burner to medium high heat, cover broccoli, cook 6 minutes. Lift the cover of the wok and stir the broccoli every so often so that it will cook on both sides. At the end of 6 minutes, the broccoli should just be cooked through, if it isn't, cook a minute or two more.
Add beef back to broccoli, stir everything together. Place in platter.
NOTE: Pork, or chicken may be substituted, only do not remove pork or chicken to a platter after initial stir-frying but continue to cook it with broccoli. Beef is removed for reserve because it toughens with prolonged cooking.