Because the quilt smells like a cat.

That's why cats always pee on quilts.

2.

So the owner should help the cat form a good habit and buy some cat litter and put it in the box. Next time the cat still urinates on the quilt, dry the urine with toilet paper first, and then put the toilet paper on the cat litter, so that the cat litter will smell like a cat, and the cat will slowly pee in the cat litter.