Once upon a time,there was a little girl called Nuwa.Her father was Emperor Yan and he loved Nuwa very much.They played together and enjoyed their happy lives,but Nuwa died when she tried to swim in the sea.She hated the sea after dying so she decided to fill it.First,she changed herself into a bird.Next and then,she told her father about the idea when he watched her flying home.Finally,she kept throwing small stones into the sea for all her life,wishing a success someday.