Each have :

Youtube link attached.

Full front credits.

Full end credits of cast with roles (blurry).

Curiously, none apparently had a director named ?!

Hunter
https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

Vanishing Butterfly
https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

What The World Needs
https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

Once Upon a Time in Hong Kong
https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

Blood Hound
https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng

Blood Hound:
Changed Cliff Lok from action director to martial arts director (also in Vanishing Butterfly).
The credits of Ng Kam-Hung looks wrong, the credits looks more like something like assistant director (maybe we should choose Assistant to director).

What The World Needs :
Looks for me like Evelyn Cheng Wing-Chiu is the director:

https://hkmdb.com/db/movies/image_detai ... ay_set=eng

Michael Kistner wrote:Blood Hound:
The credits of Ng Kam-Hung looks wrong, the credits looks more like something like assistant director (maybe we should choose Assistant to director).

That job title puzzles me. It appears in all 5 movies, and looks like something to do with sound i.e. the Ear radical. But I checked all the Sound Dept titles, and it includes none of them.

Looks like a job for a native Chinese reader.