Gu zheng nails

Apparently playing a gu zheng is like playing a guitar in that you need pick-like objects to move the strings. One each for the first four fingers on each hand if you're sufficiently skilled.

Here's my hand with three.

And ready to start pickling.

I think traditionally gu zheng nails are made out of tortoise shells, and perhaps these ones are, but to me they just look like rotten and grubby nails.