A new experience of going through the river and it's very interesting, for its cute train and the changeable lights and music. The tunnel is about 645 meters long and the whole trip takes about 3 minutes. There are two entrances: Puxi and Pudong. Puxi entrance is located along the Chenyi plaza by the Huangpu river. Pudong entrance is in the southern side of the Oriental Pearl TV Tower. 40 RMB/ trip, 50 RMB/ round trip.