I've created a new page and split some credits because the former Jo Seong-Goo page mixed two men who shared the same name. Most of the info on the former page corresponded with the Director Jo Seong-Goo, so I moved the credits for Jo Seong-Goo the actor, to the new page Jo Seong-Goo (2).

Jo Seong-Goo [the director]
https://hkmdb.com/db/people/view.mhtml?id=17026&complete_credits=1&display_set=eng

Jo Seong-Goo (2) [the actor]
https://hkmdb.com/db/people/view.mhtml?id=129909&complete_credits=1&display_set=eng

Cheers

When looking over the film A Blow Of Fury for another project, I saw that both Jo Seong-goo's (the director + the actor) share the same Hanja 趙成九. This probably helped towards the initial mix up, anyway I've added it to Jo Seong-goo (2)'s page so now he has the Big5 name 趙成九 (2).

https://hkmdb.com/db/people/view.mhtml?id=129909&display_set=eng