How many hours does it take from Putuo Mountain to Wusongkou, Shanghai by boat?

It takes 4 hours by boat from Putuo Mountain to Shanghai Wusongkou, (1) and from Putuo Mountain to Shanghai Wusongkou (12 hours). There is a slow boat. Putuo Mountain Pier sails at night 16:30. Take a boat for one night and arrive in Shanghai at around 7: 00 the next morning. (2) Putuo Mountain takes a boat to shenjiamen Bansheng East Wharf (15 minutes), then takes a bus to shenjiamen Bus Station (15 minutes), and then takes a bus to Shanghai South Bus Station (5.5 hours). (3) The speedboat runs twice a day, 12: 30 and 1: 00. The fare is around 250 yuan. The place to book a boat ticket is at the boat ticket reservation office near Putuoshan Hotel. (about 4 hours)