https://hkmdb.com/db/movies/view.mhtml? ... ay_set=eng
I'm pretty sure the second director Ding Qi-Ang 丁七昂 (1 credit) is just a misspelling of the first Director 丁強 Ting Chiang. Probably copied from HKFA that lists both names, too. I will delete him soon.
edit:
Zhang Qian-Qian 張茜茜 (1 credit) is probably actress Chang Chien-Hsi 張茜西 alias 張茜茜.
Edit 2:
Done.