Off the radar
The vast majority of the population in China has absolutely no gay radar, or ‘gay-dar.' There could be lots of reasons for this, maybe that the pop culture scene in China is not really big. People are generally less into fashion, music, art etc. maybe because most people work 7 days a week. Being gay, or ‘same'同(Tong2) ‘sex'性(Xing4) ‘love'恋(Lian4) is certainly less acceptable here than back home, and it's simply not part of the Chinese consciousness that someone might be gay, and so nobody can see.
I've spotted some of the most stereotypically gay men ever; they might as well have been prancing down the street in a pink dress waving a rainbow flag. But even these most flamboyant of gay man go totally unnoticed by Chinese people. During my stay at university here, I attended a weekly ‘English corner' event where people just hangout outside and practice their English. I was approached by an obviously gay student who wanted to talk to me about American culture, the nightlife and social acceptance. When other students wandered over to hear our conversation he backed away, afraid someone might hear something that would give him away. I was thinking, ‘you think they don't already know!?' But after a few minutes talking with the group it became painfully clear that nobody had any idea, I was alone.