One day， Tony's mother goes to the river to do some washing. Before she leaves （出发），she says to him， "Tony， when I am away， stay near the door and watch it all the time!" She says this because she is afraid of the thieves.

Tony sits down beside the door. After an hour， one of his uncle comes. He asks Tony： "Where is your mother？" "She has gone to the river to do some washing，" Tony answers. "Well，" says his uncle， "Now it is one forty-five. Three hours later we ate going to visit your family. Go and tell her about it， for I'm too busy. I have to hurry…"

After his uncle is away， Tony begins to think： Mother asks me to watch the door all the time and my uncle tells me to go and tell my mother. What shall I do？" He thinks and thinks. Finally， he pulls down the door， puts it on his back and goes to the river with it.