As for Yu Meiren, written before Li Yu's death, it should be the last words of his former master. According to ancient books, this word is also called despair. After this word was made, Song Zu was furious and gave it to death.
The ancients agreed that the late master was a generation of romantic talents and was mistaken for a master. In fact, the late master's father was also mistaken for a master. Two generations have made a mistake, how can they not die? National subjugation is almost inevitable, and the falling out of the water here mainly means that the past prosperity and other beautiful things have gone with the "spring", and it will be two worlds in heaven and earth from now on.
Of course, these are just my superficial views. I haven't read ancient books for a long time, and I have forgotten a lot.
Appreciation of Li Yu's Sand Outside the Curtain, Rain Outside the Curtain