I have a personal friend who used to prepare cremations of dead bodies in Mount Erskine Crematorium. His facial feature is quite fierce with wide nostrils & thick upturned eye brows. Of more darker, purplish skin, you could mistaken him as the 'Gu Thau' (from Chinese mythology of Ox-Head & Horse-Face entities of underworld) if you happen to encounter him at night! B'cos of his appearance, even the ghosts from the columbarium (next door) dared not offend him. He told me of a frequent incident where these ghosts held noisy parties upstairs like any pasar malam with the lights switched off. Usually, my friend would turn on these lights (for security reasons) in the columbarium after winding up his day duty before dusk. And before dawn, he would come to inspect the building & upon hearing the noises in the darken upstairs indicated some ho-hia-tee mischiefs. He went upstairs like a raging Gu Thau! He would thunder something like this: "If you dare to turn off the lights next time, there will be no more parties or pasar malam!"