Storming Attacks (1978) on Netflix

Plot summary

Han Tin Lung heads a counterfeiting ring that intends to take Hong Kong as its territory. Against it stand Hong Kong police officers and Dragon, a leader of the Special Squad who has been disgraced and now works with the officers. Han's Japanese ally Kimura is unhappy with the cut he receives from the counterfeit deal, and he looks to draw Donna, a relative of Han, to his side so the business can become his own. Both the police and the criminals are highly trained in the martial arts, and their Kung Fu techniques will decide who comes out on top.