Hi All, this tunnel is not part of their subway system. Is actually a sightseeing tunnel but also a means of transportation between the two banks across Huangpu River. That's the reason why so many lighting effect. Basically, juz put the camera on steady tripod, and capture the picture with slow shutter speed while the train move, and u can get the effect
So, you did the touristy thing, eh ? (I hope you only did it one way and not a round trip) At least you made the most of the 30 RMB spent.
Crossing the Huangpu river by ferry costs only 2 RMB