It was time for Little Mary to go to bed, but when she lay down, she just couldn't fall asleep. The little bear beside her pillow told Mary that counting sheep was a very effective method.
Mary diligently started counting sheep, and the little sheep jumped very hard. When Mary counted to 200 sheep, something strange happened—a little angry sheep jumped out and said to Mary, "Are you going to sleep or not? I'm almost dead tired from jumping!"
Mary never expected the little sheep to jump out and talk, and she was very surprised. From that day on, Mary never dared to stay awake again.