鲁班的儿子游手好闲,既不爱读书,也不肯干活,整天浪费时间。一天,鲁班把儿子拉到身边,取出一根长长的木棒,对儿子说:“你量一量,它有多长!”儿子量完以后,答道:“不多不少,正好八尺。”鲁班说:“孩子,人的一生,跟这根木棒一样,要说寿命,也不过八十左右。”说着,他抡起斧子,“啪 Luban's son is idle, neither love reading, nor willing to work, a day of wasting time. One day, Luban pulled his son around and took out a long wooden stick and said to his son, “How much is your quantity! How long is it?” After he finished his son's reply, “No more, no less than eight Ruler, ”said Luban:“ The life of a child, a man, like a wooden stick, is about eighty years old, ”he said, slapping an ax.