http://www.hkmdb.com/db/movies/view.mhtml?id=5690&display_set=eng

Thanks for your valuable info!

Changed executive directors to co-directors. I am not sure if joint directors are or are not exec. directors,
but in other movies Wu Ma is credited as co-director of Chang Cheh movies, never as exec. director.

Added prod. managers, phot., mus., ed., art dir., costumes, gaffer, props and 3 of the 4 assist. directors
(I cannot decipher the characters of Cheng Erh-Liang).