From the absurd and bizarre (to Western eyes) black magic films of the Shaw Brothers to the vile and misogynistic Category III serial killer thriller, Hong Kong horror are often eccentric and wild, rarely terrifying.
If you never seen any other Chinese horror films beside Gin Gwai, maybe just check out A Chinese Ghost Story, The Untold Story, The Boxer's Omen, Centipede Horror, Men Behind The Sun, The Seventh Curse & Mr Vampire and call it done. These 7 films truly earns it's bizarre/category III reputations. Everything else I've seen is not so terribly impressive.
1-43 - already seen.
44-68 - unseen.