I'm with Etrade it's possible to buy hong kong stocks through them. I've never done it and I assume they'll make you jump through a few hoops before letting you do it. Call 1-800-etrade-1 with questions.
"And so he spoke, and so he spoke, that lord of Castamere. But now the rains weep o'er his hall, with no one there to hear." - The Rains of Castamere