Fists of the White Lotus (Clan of the White Lotus) (1980)

Shaolin practitioners and brothers Wu and Hung kill the merciless Pai Mei. However, Pai Mei's even more merciless brother White Lotus takes revenge; killing most of the Shaolin disciples, including Wu and Hung's girlfriend, leaving only Wu's pregnant wife and Hung as the only remaining practitioners of Shaolin left to avenge the deaths. But Hung's kung-fu will not be powerful enough so he must learn feminine kung-fu techniques to help him try and defeat White Lotus.