石(いし)が大(おお)きくなりました。

The old man took the fan home. One side of the fan had a picture of the sun, and the other side had a picture of the moon. The old man thought it was interesting, and he tried fanning a small stone in his garden with the side that had the sun's picture, saying "Patapata." Then, what do you know! The stone gradually grew bigger. Surprised, the old man then tried fanning it with the side that had the moon's picture. Then, the enlarged stone returned to its original small size. "This is a magic fan!" The old man was very happy.