I have not heard of a Zhonshen 250, but I have been looking at the Zhonshen 200 in Beijing recently, it is getting better in build quality (almost starting to look like a "real" bike) , it is retailing for around 8900 RMB

but, the bike that really caught my attention lately , is posted on a different area of this website, the Shineray 250 ,

it is double overhead cam, 4 valve, liquid cooled 250 WOW !!!!

these China bikes are slowly, but surely coming up to Int'l Speed