QUOTE(JunJun04035 @ Jan 10 2015, 08:33 AM)
The temple had two sides, one for the Hell deities, one for the Heaven deities.
Both side have a few disciple which able to trance, which give me the first question: Is it normal that a medium can trance both side?
It is actually pretty common for a medium to channel both Heavenly gods and Hell deities. In fact, you seldom, if ever, see a medium who channels Hell deities alone.
My teacher channelled Elder Brother, Second Brother and the Heavenly god known as Lord Zhang/张公圣君, whom I will post about later.
QUOTE(JunJun04035 @ Jan 10 2015, 08:33 AM)
The Ji Gong story is quite funny actually. This temple had a weird "tradition", whenever the medium "wanted "trance for Ji Gong, it will make something like an announcement to notify the neighbourhood. Then they will bring their children to the temple for blessings, to cure sickness, to calm shocked emotion etc.
Quite standard procedure, really, for a sintua or temple to announce to its local parish when certain gods are being channelled. This is usually done in the temple's early stages, however; over time, word of mouth amongst the temple-goers plus between temple-goers and laypeople, becomes sufficient advertisement.
QUOTE(JunJun04035 @ Jan 10 2015, 08:33 AM)
Sometime, the Ji Gong will drink with the neighbourhood, all sort of liquor, which he can drink really a lot, according to the folk, this is because of his divination. (五加皮,青竹酒,Blue Label and sort). One time, because that I'm standing close, he order me to fetch his drink, and serve him and his buddies. When he chanted YUM (drink in Cantonese), other than really drinking it, he using his fan and long sleeved robe, seemingly pouring the liquor into his sleeve.
I some how stunned, and stared for more than 5 sec and I think he noticed. Ever since, come the weird hostility.
Then one day, a new disciple wanted to try to trance, and temple's men in charge (庙祝) ask by stander to help, I being curious then go help too. Inside, a Second Elder Brother and the former mentioned Ji Gong is there helping the new disciple. Whipping long whip, chanting something I don't understand, using joss stick to air-writing charm and so-on. However nothing much happens. The new disciple only breath harder and harder, shivers and rocking his chair.
Then the Ji Gong Kneel down and pray out loud, asking help from God-Who-Know-which-God he is praying too. Then he throws a poe (掷筊), then he looks at me at saw your aura (气场) is not compatible with the disciple, saying that I doubted and do not believe in God and until the point I think the humiliation is enough, I left.
I can't say I've ever heard Ji Gong, or even ANY deity, for that matter, speaking in Cantonese before - trance mediumship is very much a Hokkien and Teochew tradition.
The presence of a non-devotee or non-believer should not interfere whatsoever with how a trance progresses. We often had such people attending our temple feast days and celebrations out of curiosity, and no issues or problems were encountered.
Glad you pointed out the whip, though; it's a very important ritual tool in Chinese folk religion, and I will explain about it thoroughly in due course.
QUOTE(JunJun04035 @ Jan 10 2015, 08:33 AM)
The Guan Gong one is an even scarier drama.
The medium for Guan Gong is some how related to the medium of Ji Gong (Brother-in-laws IINM).
One day, he trance into Guan Gong, and start wielding his Guan Dao, and then in a very movie-ish motion he pointed his Guan Dao at me and yelled "How dare you face me and not kneel" (何方竖子面圣而不跪?)。 He then walk towards me in a very stompy fashion. I was genuinely scared and stunned, mind goes blank directly.
I knew the Guan Dao was not knife sharp, but it has been sanded down at the edge, and it weight ~10kg.
After three steps, the Guan Gong stops, stomp his Guan Dao and laughed "Brave kid, I let you go this time." (小子大胆,今放尔一马)
And yes, the Guan Gong speaks in Classical Chinese.

Deities normally converse in an ancient, rarified version of dialect that is very difficult for a modern-day devotee with no knowledge of classical languages to understand. I know I certainly didn't, at least not completely. Oftentimes, a temple committee member or assistant specially trained as an interpreter must translate for the benefit of the consultee.
Lord Guan has an air of overwhelming masculinity and might, but he is a benevolent character and will not behave in such an arrogant or rude fashion. In fact, never in my entire sintua involvement have I seen a deity demand that devotees pay him respect.
If anything, what you describe only serves to reinforce my conviction that this temple is inhabited by conmen.