One day, a man named Mao Kong said to Ai Zi: A duck laid one hundred eggs at one time.

　　Ai Zi didn’t believe him. Mao Kong added: Maybe there were two ducks.

　　Ai Zi still didn’t believe him. Mao Kong went on saying: Maybe there were three ducks.

　　And so he repeatedly changed his words until he increased the number of the ducks to ten. Once again, Ai Zi didn’t believe him.

　　After a while, Mao Kong told Ai Zi another thing: Last month, a piece of meat which is thirty meters wide and twenty meters long fell down from the sky. Ai Zi didn’t believe it. Mao Kong changed his words again: That’s a twenty-meter-wide and ten-meter-long meat. Ai Zi still didn’t believe him.

　　Finally, Ai Zi asked Mao Kong: Whose duck is it? And where is the meat?

　　Mao Kong said: I heard all of them from others.

　　Then Ai Zi told his students: It’s a bad habit of spreading rumors like Mao Kong.

　　02

　　故事梗概

　　一天，一个叫毛空的人对艾子说：“一只鸭子一次生了一百个蛋。”

　　艾子不相信。毛空又说：“那可能是两只鸭子生的吧。”

　　艾子还是不相信。毛空就说：“那可能是三只鸭子生的”。

　　就这样，毛空一再改口。最后一直增加到10只鸭子。艾子还是不相信。

　　过了一会儿，毛空又对艾子说：“上个月，一块30米宽，20米长的肉从天上掉了下来。”艾子不信，毛空又改口说：“是20米宽，10米长”。艾子依然不信。

　　最后艾子问毛空：你说的鸭子是谁家的?肉掉到了什么地方?

　　毛空说：“那些都是在路上听别人说的。”

　　于是，艾子对他的学生说：“你们可不能像毛空那样道听途说。”