Mu You suddenly understood, right, this is the Kirin Nest, just like how animals naturally shed fur every day, Kylins would also shed scales.
No matter how clean the mother Kylin keeps it, there are bound to be scales that haven't been cleaned from the corners and cracks.
These scales may not be of use to the Kylins, but to humans, they are treasures worth a fortune. After all, Kylins never show themselves to people, and others don't have the opportunity to directly come to the Kirin Nest, so Kirin Scales circulating outside are scarce.
[You can't wait to start searching the nest, lifting piece by piece of leather, looking for other scales.]
[You obtained a Kirin Scale.]
[You obtained a slightly damaged Kirin Scale.]
...
The scales here aren't all in perfect condition, many are damaged, either broken or chipped, some have even lost their luster and no longer have the effect of isolating negative states. But even so, these scales still hold high value as crafting materials.