'New Kids in Town' aka 'New Killers in Town' (1990) - Kar Yung-Lau.

Two naive, though deadly proficient martial artists from mainland China travel to big bad Hong Kong to help out their beloved uncle (Chia-Liang liu). Not long into their eventful visit when their heroically high-kicking cousin, Siu-Fung (Moon Lee) righteously Kung Fu's some drug dealing skells which puts them directly on menacing, apple crushing kingpin, Eddie's (Eddie Maher) kill list! Happily, the threadbare, predictably revenge-slathered plot is densely reinforced with an exhilarating plenitude of relentlessly manic martial arts mayhem! Once again, the jaw-droppingly beautiful mistress of gravity defying, mandible-mashing martial arts insanity is on fleet form in bullet-shredded HK action classic 'New Killers in Town'. Humorous interludes are atypically replaced with a darker tonality, there's an especially nasty moment wherein, Eddie's sadistic henchmen set fire to an ailing, wheelchair bound grandpa that feels somewhat gratuitous. Mind-boggling pugilistic awesomeness abounds in, Kar Yung-Lau's cult classic, with the final gonzo act being a bloody blitzkrieg of ribcage-wrecking bellicosity. The savage sinew-snapping showdown betwixt hatchet faced villain, Eddie and, Chia-Lian Liu is an undeniably thrill-spilling eruption of unleavened power-bossage!