Rooftop poker in Wan Chai, Hong Kong

I am back in Hong Kong, after a week in Taiwan. Yesterday night, at my grandparents' rented flat, I saw over the window, a bunch of foreigners playing poker on the rooftop of another lower building adjacent to ours, but on Morrisson Hill Rd. I listened more closely, and, while not able to make out what they were saying, am pretty sure that they were speaking French!

It was a Thursday night of a not-long weekend, so we assume that they are tourists, or business travelers on a day off. They were blasting noisy party music too, and if you look closely at the pic, the guy with a white shirt on the right has a full house (not really, though).