Andrew stumbled upon a magical crystal ball in the Ravenclaw Tower. The crystal ball was only the size of a fist and was embedded in an inconspicuous corner of the Astronomy Tower. Andrew returned to Ravenclaw Tower from the library almost every day, but this was the first time he had discovered the crystal ball. That night, he stayed up too late reading in the library and lost track of time, which led him to run down the empty corridors in order to get back to his dormitory before curfew. As he passed the corner, a squeaky honey candy he had in his pocket somehow rolled out and, almost without any slippage, ended up in that unnoticed corner, as if guided by some unseen force. Andrew followed the candy into the dark corner, bent down to pick it up. When he looked up, he noticed a small, inconspicuous crystal ball loosely embedded in the corner of the wall. "What's this?" He barely touched the crystal ball, and it fell out of a hole in the wall.Without thinking much of it, Andrew put the crystal ball in his pocket and quickly ran back to his dormitory. As night fell, he drew the curtains, lay in bed, and quietly took out the crystal ball, playing with it in his hands. Suddenly, a voice came from the crystal ball: