Chinese drama mentioned ayu

[Ayumiko]

I was watching a chinese drama, Wasabi Mon Amour (和味濃情) its a HK drama and in episode 18 they mentioned ayu...lol In that scene, the guy was trying to tell his girlfriend who his fav japanese idol is (I think its some made up person...or atleast I don't know who she is) and the girl doesn't know even though they have the same name (momoe).

Guy: how can you not know who she is? she used to be very famous.
Girl: like how famous? In Japan the most famous is 步姐. (this is how Chinese call ayu) Well did she ever have a concert here in Hong kong?

http://www.youtube.com/watch?v=l7qsEHdSOdA&NR=1
3:44- 3:50