Tonight, we will witness the super blue bloody moon. I remember the legend of eclipse in China. People in ancient times believe that eclipse happens because a dog in the sky is eating moon. So they beat drums and gongs(a traditional Chinese instrument) , make some noise to intimidate the dog. As a result, the dog would spit moon out. It makes me think, what if people find that the dog will spit it out automatically without any endeavor from human? How they will explain it?