lit. corpse jumps over the beam (idiom); fig. a desperate situation

Ghosts don't speak, curtains fly halfway through the night, cats are hungry and corpses jump over the beams, it's time for hibernation, and the moon is clear, and the moon is clear, and this is the phrase I used to hear my grandparents recite in my ear when I was a child, and it's like a poem and like a nursery rhyme at the same time. I didn't know what this phrase meant when I was a child. But as time went on, I don't remember much of it. It was only when I was a freshman in college and a series of strange things happened. I realized that the phrase was a macabre allegory for our area. Especially the line about the cat being hungry and the corpse jumping over the beams is a rare and vicious sign.