Meng gui zhou

A young couple listen to the advice of their uncle, a toast priest. He gives them a long and totally inscrutable spiel, possibly about avoiding demons, though it's hard to tell. Then the young man, Chan Che, takes a business trip to Bangkok, where he bumps into lovely Thai girl Chuma, who just happens to be a witch, and the daughter of a wizard. She casts a spell on Che, so that he'll love her. Che returns to HK and his wife, and he starts to act strangely. Through her evil statue-god, Chuma turns the man into a raging wife-killer. The toast priest is eventually called in for a spirit battle with the works.