Before begin lecturing, he is carrying a bowl of water to be on dais, let everybody watch a of lively move about small fish in water.

• 抗日战争时期,有一次贺龙同志给根据地机关干部上党课。在开讲前,他端着一碗水走上讲台,让大家看了看水里活泼游动的一条小鱼。