Do opponents have any requirements for playing guzheng?

There is no requirement. When playing, the nails should be cut off, and you can't leave them for too long or you will touch the strings.

To play the guzheng, you must first keep the correct posture. Wear nails on the index finger, middle finger and thumb of both hands in turn. You can buy two rolls of medical tape, one to keep the back of your hand straight and the other to wear nails. Nails should be about the size of the first joint of a finger. Wear it slightly upward on the first joint, and wrap the adhesive tape in the middle of the first joint without affecting the joint activity. The way to wrap the big finger is different from other fingers. Fake nails is at a 45-degree angle inward from the fingertips, and the left and right are opposite.

Open your eyes to the music, sit down, and then start practicing guzheng.