I think many people have heard this story of Cinderella. Fairies, pumpkin carriages, dresses, and glass slippers made Cinderella attend the prince's ball. At twelve o'clock at midnight, Cinderella remembered the fairy's words and left the ball in a panic, but accidentally left her glass slipper on the steps of the ball. The prince took the glass slipper and looked for it one by one. Finally he found his Cinderella and lived a happy life. However, if Cinderella had not dropped her glass slipper. How should the prince find his Cinderella?