Fish and birds no longer meet, mountains and water no longer meet, and they no longer care about each other's quality. This is a determination to express themselves. The antonym sentence is, Tianshui is the same color, only fish and birds are Qi Fei.
Mountains and rivers never meet, which means that people who like each other will never meet again, so that they forget each other in the rivers and lakes and stop talking about each other's good and bad. The meaning is a bit bleak, or helpless, lost and firm, which makes people unable to bear to look back.
This sentence comes from a story, which reads as follows:
In this sad story, birds and fish are the protagonists. The story is about a bird, flying over a beautiful water, meeting a fish floating on the water, breathing, eyes colliding and staring for a long time. They were surprised to find that they had fallen in love with each other deeply. Birds are hovering in the air, unwilling to fly away. And the fish won't sink for long.
However, after all, they are two completely different living environments and are doomed not to be together. Finally, with a sigh, the fish sank to the bottom of the sea and the bird flew out of the water sadly. Meet in a hurry and disperse in a hurry. Birds never passed through this beautiful water again, and fish never surfaced.