Just like the way The Exorcist with Reagan Macneil all unpossessed and normal again this movie ended with a solution for the Kung fu school. And in both cases there were surprise sequels. They took away the permanence of the climax of both films -- that is what these two early 70s hits have in common. At least Planet of the Apes sequel of 1970 did not take away the permanence of the climax of the original film.