This sentence is from Cao Cao's A Short Song. Cao Cao was an outstanding politician, strategist, writer and calligrapher in the late Eastern Han Dynasty. He wrote in "Short Songs": "The mountains are never too high, and the sea is never too deep. Duke Zhou vomited and fed, and the world returned to the heart. " This is an expression of his thirst for talent, hoping that people with lofty ideals can join themselves in succession, so this poem is actually a "song of seeking talent". The "disgust" here is the most appropriate meaning of satisfaction. Therefore, "the mountains are never too high, and the sea is never too deep." Duke Zhou vomited and fed, and the world returned to the heart. " It means that the mountains do not hesitate to see the majestic, the sea does not abandon the trickle to see the magnificent, and the wise master never tires of people, so he can become a crowd; Scholars never tire of learning, so they can become saints. This is Cao Cao's metaphor of mountains and the sea, showing his thirst for talent.