Apecial Expo Bus Line 37, 37A and 37B rund between Chongming Island and expo. From Shangnan Road Exit of Expo, you can find bus 37 at 9：15—23：00 back to Chongming Ximen Bus Station. In peak hours (14:00-21:00), you can find bus 37A at Houtan Exit and 37B at Bailianjing Exit back to Chongming.