He dunno lah.
Even their shooting location is not divluged one unless one is so damn heng happens to see.
Chances of spotting TV Stars in public are pretty low and I guess even if they appear in public, they are not in their usual glam makeup look and may appear uber dressed down. Our dear zhangyb might not even recognise Ueto Aya even if she were appear in public I guess. ;p
P/S: That reminds me of an article I'd seen abt Sawajiri Erika with her rumoured bf in public, when I saw the photo, I thought the papparazzi had got the wrong girl. :bsmilie: