What is the name of the thing on your finger when you play the guzheng (like a ring)

When playing the guzheng, fake nails called "One Plus". You need to wear artificial armor (armor) to play guzheng. This is for multiple purposes, such as protecting the real armor from wear, increasing the volume of the zither string and pursuing bright and beautiful timbre. In modern times, guzheng players are very particular about the choice of armor. Different materials, different shapes and specifications, different thicknesses and different production techniques will all affect the sound quality and timbre of guzheng!

Provided by Yihe Guzheng, hope to adopt it!