深海里的鱼只有七秒记忆
        
            [shēn hăi lĭ de yú zhĭ yŏu qī miăo jì yì]
        
        
            'A fish in the deep sea has only a seven-second memory' - Refers to the idea from popular culture where fish are said to have very short memories; may indicate a carefree lifestyle or easily forgetting troubles.