While adding two images to that movie, i noticed the Big5 title in the DB differs from those in the pics:
http://hkmdb.com/db/movies/images.mhtml ... ay_set=eng
This appears to be the title: 風塵十三姨 This ia also the title at HKFA.
Perhaps an experienced editor could take care of this issue.
Both Mei Ah releases have the English title "Bloody Revenge" on the sleeves, not "Spy Thirteen". The HKFA enlists it as "Bloody Revenge", too. So I think the English title should be set to Bloody Revenge what makes "Spy Thirteen" an alias.
I remember I read somewhere about that movie under the title Spy Blood 13. I have no source at hand but it's also listed as an alias at the IMDb.
Maybe that should be added as well.