How to travel from Pudong airport to Changshu City (and reverse) by long distance bus?

You can take airport shuttle bus line 7 to the local South Railway Station, from where you can walk to the nearby South Bus Station. At the bus station, you can easily catch a long-distance bus to Changshu city.

For the back journey, you can go to Changshu South or North Bus Station to take a bus.

found all on map, thx.