QUOTE(estcin @ May 1 2015, 12:29 AM)
Thanks again Nacht. Really learned a lot from this thread. Before this I was told a temple nearby is praying to "ghosts" which are actually the Hell deities as their faces look scary. Previously misunderstood and I thought the temple is doing some black magic or evil sorcery. Now this clears up after I understand thei Hell deities job and role.
More questions, if you don't mind:
1. Is gambling allowed in temple? they seem to do that often.
2. The temple provides service for 打小人 on certain dates. How does this works?
It is not wrong to refer to the Hell deities as ghosts, because that is what a lot of them are - undead/ghostly beings.
A visiting boy once referred to the resident Hell deity at my teacher's temple using the term 无常鬼 or Unpredictable Phantom, which prompted his mother to loudly chastise him, stating that using the term '鬼' was impolite.
The Hell deity told the woman to be quiet and stop giving her son a hard time. "The boy is not incorrect. I am what I am; I know what I am. And I appreciate people who call a spade a spade."
Lots of people still wrongly regard the Hell beings as creatures of ill-omen given their association with death, however, and undeservedly give them a wide berth - I have people give me wary or fearful looks when I tell them I worship them in the home or when I buy Hell-related items or supplies at my local prayer material shop, and there are temples where they are enshrined that are virtually empty most of the time, due to people not daring to enter.
1. Yes, you can gamble in a temple, provided the gambling is 'friendly' or casual, as in if no bets are placed or if the bets are very trivial.
Here are some Hell deities, being channelled by their mediums, playing a game of cards on temple premises (the bets were stacks of incense paper).

2.
The '打小人' or
'hitting small ('small' in this case this really means 'petty' or 'small-minded')
people' ritual is a ritual geared towards ridding one's life of petty or malicious people. It is performed in conjunction with the
Tiger Gods or Tiger Generals/虎爷公, the feline guardians of temples.
Us humans have guard dogs to guard our houses; temples have 'guard tigers' - every temple or sintua will have at least one Tiger God on retainer, usually placed in the same alcove where the Earth God is enshrined, as only a very few individuals, including that sweet old man, are able to tame its savage nature. The Tiger God is regarded as a ferocious beast that can drive away malign influences.

The ritual involves beating paper cut-out figures, which represent people who have been giving you a hard time, with a slipper or other item of footwear, whilst certain incantations are being chanted and certain offerings are made (this can differ slightly from temple to temple), following which the paper figures are pasted up in the Tiger God's alcove for him to 'devour'.

It is important to realise that
the ritual is NOT geared towards harming your tormentors - it is geared at purging them from your life, stopping them from bothering you. Wishing harm towards them during the ritual is, in actual fact, a surefire way of making it either fail or backfire upon yourself.
Examples of petty people being purged from the lives of those who conducted this ritual are the rude and arrogant supervisor who ended up being transferred to another company branch far, far away, the quarrelsome neighbour who emigrated, the abusive teacher who lost his job when his abuse was reported to the authorities by another of his victimised students, and so on. Done correctly, this thing can be pretty darned effective.