This moat surrounds the Forbidden City. Keely and I hung out there, waiting for the ticket office to open. We saw people practicing tennis against the wall of the Imperial City, then an old man and woman set up and started making noises like a cat skinning factory. The man was playing a Chinese violin, which made almost the same sound you get by squeezing a cat's tail in a vise. The woman seemed to be trying to match the sounds with her voice. We decided it was opera and left.