Some folks in Hanoi still use coal fired stoves - here's what they look like once they've been used (the cylinders with the holes in them were coal). More typical is taking power from the wires, which get a bit jumbled on the poles around the city. I remember reading in an article in the local paper that up to 30-40% of such wires are either no longer used, or are 'self-installed' by folks looking to piggyback on the local utility lines.
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