Once upon a time, there was a poor boy. He made his living by selling Fried bread stick (油条). He worked the whole day and earned 10 copper coins (铜板). Suddenly, he found all the coins gone. Who stole the coins? The boy thought for a while. Then he brought a basin of water and asked the people beside him to wash the hands in it. As soon as one man put his hands in the basin, oil bloom showed on the water. The boy pointed at the man and shouted, “It is you who stole my coins.” Was he the thief? 全文查看链接