They are a pretty good band, straight up rock and roll. From the CD's they sound a bit formulaic, but I haven't seen them live so who knows, often rock bands that sound mediocre on CD can be very very good live.
I gotta say in recent years, Wang Lei has been consistently good and SURPRISING, which is probably the hardest thing to do in popular music. I'd love to check him out next time I'm in Guangzhou, if he's still there.
