Ripley's Believe It or Not!: The Riddle of Master Lu Hints

First, what do I need to know about the bridge?

  • 1 of 6: Have you examined it thoroughly?
  • 2 of 6: You don't have to walk across it to know that a wheel turns.
  • 3 of 6: A wheel can also be turned.
  • 4 of 6: The bridge has a hole in the both ends of its length across.
  • 5 of 6: Did you notice anything familiar near the far side of the bridge wheel.
  • 6 of 6: There is another crank slot.