Students fill half the simple but tidy rooms at the Cheng Lin Ming Guang Hotel, a 10-minute walk from Beijing Normal University.
If you contact the local site members then your chances of success are so much greater.
The relaxed attitudes about sex mark a historic turnaround from the days when love and sex were denounced as bourgeois decadence, and unisex Mao suits and drab austerity were the norm.
But the revolution is taking place largely behind closed doors, and the word "sex" – or "xing" (pronounced shing) – is spoken only among close friends, and then usually in a whisper.
So, he set to work and read every book he could find, studied every teacher he could meet, and talked to every girl he could talk to to figure out dating.
After four years, scads of lays, and many great girlfriends (plus plenty of failures along the way), he launched this website.