Abun wrote:That's exactly what struck me as the most obvious cultural difference from the PRC (and even from Korea where I had been before, in last August). [...] But not only public temples, also private shrines are something I can't really imagine in the PRC (not sure about Korea in this case because I wasn't able to visit private homes there, but judging by the things shown on TW, at least some families do have ancestor shrines).
Well, one program I saw on TV (or perhaps it was an article I read) talked about how "trance possession by gods/spirits" was alive and well in South Korea, but that there was considerable pressure from the government "not to talk about it" (because they were "ashamed" of it, as reflecting "supersitious nonsense"). Trance possession is one of my favourite topics

, as it's also a very important part of Hokkien culture.
One of the EATS conferences had a paper on "communicating with one's ancestors" (in particular, dead parents and spouses). Apparently, this was a growing "movement" in Taiwan. And one which was very interesting from a historical-sociological point of view. This is because (according to the presenter, from memory), such rituals were
completely unknown in "traditional" Chinese society. When a spirit medium was possessed, it was traditionally only done by a major god. (This is indeed the way I know it too.)
The presenter of the paper had some ideas that this new phenomenon was a result of "individualization / Westernization" in Taiwanese society. That is: instead getting messages and information from an impersonal god, whom everyone already knew, one could get the same from a specific individual, whom only you or your family knew (and who already knew you personally). He presented this argument a lot more coherently than I'm able to do here (I'm not even sure if I got it exactly right). But it was certainly fascinating to learn about.
Abun wrote:But not only public temples, also private shrines are something I can't really imagine in the PRC [...]. The family I was staying with had a shrine with a big statue of Kuan-im 觀音 right before the guest room and the older family members would go pài-pài 拜拜 first thing every morning

Again, many parallels to Malaysia. Certainly, in my youth, almost every single Chinese family that I knew in Penang had a small ThiN-kong altar attached to a pillar at the very front of the house. That's all that my grandparents had though - there was no shrine or altar inside the house, to a specific "family god". But more than half of the homes I knew would have a "Koan-Im", "Koan-Kong", "Tua-Peh-Kong" (or, very occasionally, Monkey King) statue and altar in the living room, as the family god. And there would be oil burning from a wick dipped into it (never constantly incense, as that would smell out the house and be unhealthy I think).
[The only Chinese people I knew without any elements of Chinese Folk Religion in their homes were the "young urban professionals", who had gone to university and got "Western Scientific Ideas". People like my parents, uncles and aunts, for example! The fact that my mother had a Christian background also played some role in this, I guess, but even many of my aunts who were married to men from backgrounds which followed Chinese Folk Religion, and many of my uncles who were married to women from similar backgrounds, all didn't have ThiN-kong altars outside the house (which I consider the barest minimum to qualify as being still a follower), "just because" they considered themselves more enlightened, with their scientific and Western ideas. In fact, in my youth, among that group of people, it was even common to mock the Sin-SEN (TCM practitioner), saying that "bong-mEh" (feeling the pulse) was just mumbo-jumbo. So, what bits of exposure I had to Chinese Folk Religion were from the "non-professional"/"normal" members of my extended family (including my grandmother). Even my father taking me to temple on the birthday of a god was not so much because of any belief in or devotion to the god, and much more just to expose me to "cultural richness and diversity". The Cheng-Beng ceremonies at the grave, and death-day worship in the home were however taken reasonably seriously, even by my parents, including my mother, who just followed what the rest of the family did, because she had no knowledge of this sort of stuff from her own Methodist childhood.]
Another parallel is the roadside shrines in Penang. In fact, I think there were even more of them in Penang than in Taiwan (though I can't say for sure, as I was only 10 days in Taiwan). I imagine there are still countless Tua-Peh-Kong shrines everywhere in Penang (and the "Datok-kong" ones as well). These must be the two most common shrines in Penang - mostly just a small wooden structure, often no more than 0.5 m wide x 0.5 m deep x 0.75 m high, set up under a tree or rock, on some uncleared piece of ground, or on some small street corner. Often with just a tablet inside, with the name of the deity in Chinese characters (instead of an actual statue), and oil or incense burning in front of the tablet.