About an hour.

Hello, the transortation between suzhou and shanghai is quite convenient. You can go there by train or by bus. The train runs at 20 minute intervals, very convenient and the cost is about 20CNY. By bus is also very convenient and the price is little higher than train, about 24 CNY. I nealy forget that the time for both train and bus is about 40 minute to 1 hour, and it is impossible to travrl everyday to see an exhibition.