In the early hours of Saturday morning a 22nd-floor bar in a narrow tower in Mong Kok is as busy as it gets. Karaoke fills the ears, Chivas-green tea fills the mouth and cigarette smoke fills the nose.
The majority of the crowd in the bar - university students or younger - are smokers and, high up above the streets of Mong Kok, they have no qualms about lighting up in the poorly ventilated and dimly lit room.
Today marks the first anniversary of a smoking ban, which punishes those who smoke in bars, nightclubs and many other public places.
But a year since the full implementation of the ban, it is not only the Mong Kok bar that is still filled with smoke. Bars, amusement game centres, parks and restaurants are just a few of the places where smokers can still be found puffing away.
Hong Kong is one of the only places in the world that fines its smokers for breaking no-smoking rules and not the establishment's owner. In Britain, the smoking ban makes bar owners directly responsible for smokers' actions by putting their licences at risk if smokers are found repeatedly flouting the ban on their premises.
In Hong Kong, it is not only customers who fail to show an appreciation of the ban; a year after the regulation was introduced, cafe and bar owners and managers also take a hands-off approach to it.