Actually, Chris, methinks the one in Obei was the owner who had death threaths out on the teachers who wanted to leave. But I'd have to doublecheck that with the ppl that are still here to verify.
I've been in Wenzhou a number of years and have heard both good and bad stories bout DD Dragon here. Not sure if they can provide Z visas here in Wenzhou. As far as I was told, only two schools last year got their licsences, the one I work for and another one, but I can't remember which one (darn auld age :P)