Don't worry, the alumni association of Changzhou University told you that after you arrive at Changzhou North Station, you have to go to the South Station through the tunnel, with signs and waiters, so you can go easily. When you get to the South Station, cross the road to Dicos, which is the North-South Road and the West Road opposite the entrance of the South Station. There are lines b 1 1 and 2, all of which are direct.