they appear together as director for: https://hkmdb.com/db/movies/view.mhtml? ... y_set=big5

Hi heinz,
I think this is a registration mistake. In 《女秀才》, it is clearly stated as "尹致成".
It would be better to merge it into "尹致成" and delete "尹玫成" ...

《女秀才》
https://hkmdb.com/db/movies/view.mhtml?id=15454&complete_credits=1&display_set=eng

Hi Leecoo, that was a smart move I didn't check that bill, OK just as I assumed that was the wrong one and I deleted him,
added his name 尹玫成 as an alias to 尹致成 and moved the one directing credit. We only have one Wan Chi-Shing so I deleted the (2), too.. (two, too) Thank You for advise and help