From Shanghai Pudong Airport you can join Trip's Huangpu River cruise for free.
The tour guide said that this tour is a collaboration between the government and Trip. That's why anyone with a layover can join. It seems that not many people know about the free tour.

Procedure:

  1. Departure from Shanghai Pudong Airport
    Meet at the Trip.com Group Currency Exchange Counter near Island A in Terminal 2 Departure Hall to board our tour bus!
  2. Huangpu River
    Take a cruise to enjoy the amazing city views
  3. Yu Garden
    Immerse yourself in traditional Chinese architecture and gardens.
  4. Return to Shanghai Pudong Airport
    Enjoy the return trip and catch your next flight!

How to join

  1. CheckYourSchedule
    Simply pick the route that suits your schedule and interests based
    ontheavailabletourtimes.
  2. Meeting Point
    Uponarrivalattheairport,simplyheadtothemeetingpointfor
    in-personregistration.
  3. Begin Your Hassle-free Tour
    Once your registration is completed, you will be picked up by our
    professional guides at the meeting point.