Early 70s marshal arts movie with a green snake

Professor Van Helsing had been asked to help against the tyranny of skeletal creatures that are responsible for terror and death amongst the peasants in rural China. He is the only person qualified to deal with the cause of these phenomena, for the undead are controlled by the most diabolical force of all.... Count Dracula. But he is not alone- to aid him comes a mystical brotherhood of seven martial arts warriors.

The anti-Ching patriots, under the guidance of Ho Kuang-han, have secretly set up their base in Canton, disguised as school masters. During a brutal Manchu attack, Lui manages to escape, and devotes himself to learning the martial arts in order to seek revenge.

A couple unite - she is fluent in the crane style of kung fu, he in tiger style. They have a son, but the boy's father is killed by the evil eunuch Pai Mei. Disguised as a girl, his mom trains him in crane style while he secretly learns tiger style from his father's training manual.

Everyone abuses and humiliates a downtrodden orphan until he befriends an old man, who turns out to be the last master of the snake fist fighting style. Jackie becomes the old man's student and finds himself in battle with the master of the eagle's claw style, who has vowed to destroy the snake fist clan.

After getting into trouble, a mischievous young man is sent to train under a brutal, but slovenly old beggar, who teaches him the secret of the Drunken Fist.

Returning home with his father after a shopping expedition, Wong Fei-Hong is unwittingly caught up in the battle between foreigners who wish to export ancient Chinese artifacts and loyalists who don't want the pieces to leave the country. Fei-Hong must fight against the foreigners using his Drunken Boxing style, and overcome his father's antagonism as well.

Carter Wong stars in this Hong Kong classic as a powerful martial artist who must protect an old man and his daughter from a snake god who possesses deadly kung fu skills.