The meaning of these two sentences is: when the fish dies, the geese can no longer find it; after being away for a long time and far away, no news can be obtained. It is only after losing that I understand the pain of separation.
The fish sinks and the wild goose disappears. They are two ancient allusions, which describe a lover traveling far away without any news.
This is a sentence from Dai Shulun's "Acacia" in the Tang Dynasty.
Acacia Song
Tang Dynasty: Dai Shulun
The tall buildings close the bright moon, and the heartbroken immortal man bids farewell every other year. The purple flute and horizontal flute are silent,?
Sitting alone facing the Yao window, I feel extremely sad. Fish Shen Yan Yao Tianya Road, began to believe that separation in the world is painful. ?
I hate the jade quilt on my gums, and hate the golden hairpin and phoenix stock. The well is deep and the windlass is short, and the clothes and belts of lovesickness should be slowed down by the day. Cut the water with the knife and connect it again, and cut the love with the blade. ?
Luo Hong chases the east flowing water, and a little heart will die for you. My body wishes to be like a Wushan cloud, flying into the dream soul of the immortal man.