What does it mean to shed tears on the moon and pearl in the vast sea

Tears on the moon and pearl in the vast sea is a poem from the Tang Dynasty poet Li Bai's "Wine to Drink". The whole sentence is: "Don't you see that the water of the Yellow River flows from the sky to the sea and never returns?" Can't you see the bright mirror in the high hall sad, white hair in the morning like black silk, turning into snow in the evening? Life is full of joy, do not let the golden cup empty face the moon. I'm born with talent, I'm sure it'll be useful. To cook sheep and slaughter cattle for fun, you must drink three hundred cups at a time." The moon shines on the sea, and the bright pearl will shed tears. Life is short, cherish the happy time in front of you and don't waste it. At the same time, the tears of the moon in the ocean also hinted at the poet's feelings and thoughts about the passing of time.