At present British nationals who are gay may not take part in civil partnership ceremonies at the British Consulate in Hong Kong. The ban results from objections raised by the local Hong Kong authorities. When I first lived in Hong Kong in the mid-1980s homosexuality remained completely illegal there, as it had been in the UK until 1967, but in more recent years the gay community has become considerably more visible - although evidently not sufficiently accepted to allow such harmless, and normal, events to take place. Fuller report here.
I interrupt my lengthy 'hiatus' merely to note this sad evidence of continuing homophobia in a part of China.