Hong Kong was governed by the UK, so he might have a UK passport and as such could have duel nationality.
I've never ordered from him, but I've ordered from tomchina who is in HK, and he sends goods within 14 days when I pay via paypal. I would only pay by paypal for goods from HK, I wouldn't send a money order, or postal order as they are called in the UK.
I don't think leaving bad feedback has helped you, as you don't know if the money has been cashed yet. If the money is cashed, and after four weeks no goods, then it's time to complain..!!
However sorry if you have lost your money. I actually haven't brought from him due to the bad feedback he gets. Tomchina has hardly any at all, and his packaging is superb. I always buy my kits from him.