If you are coming to Shaoxing from shanghai, definitely take the CHR "dong Che". It takes just one half hours! But note that it goes to Shaoxing Bei (north) station, which is a RMB50 taxi ride away.
Small town with many place of religious interest and house of famous people in the past, etc. packed together.
Really great to take a walk to all of these place if it is not too hot. There is a shopping street called Dongmen Lu that is also very good. There are a small lane with many vendors and shoppers can take a walk around there without cars! You may take 3 days if you want to visit Shixi (one of ancient Chinese four beauties)'s house in a town southward of Shaoxing (don't remember the name) and also the tomb of Yu the great, the first Emperor of Xia dynasty