C291 Is it a cat monster or a cat immortal?

"After Great Immortal Cat went down the mountain, the village heard the sound of weapons clashing at night, along with the shrieks of rats. But in the dark of the night, we can't see anything. We can only hear movement, but there's no sign of the cat or the mouse. "

"When everyone went out the next morning, they only saw the rat corpses scattered all over the ground