Arthur our tour guide insisted that we go in the “penetrator bathroom” at the Reed Flute Cave in Guilin even if we didn’t need to use the restroom. We weren’t about to go in any bathroom named penetrator. But Arthur insisted so we cautiously entered only to be surprised with the best view from a restroom we had ever seen. It became apparent that penetrator was a loose translation meaning that your vision could “penetrate” through the walls to see the outside.