1。 Playing and practicing the injured guzheng is easy to cause physical injury if you exercise too much. Guzheng requires precise playing skills, so you need to practice the movements of your fingers, wrists and forearms. But the technical operation is not perfect. . . 2。 Listening is likely to weaken if you practice high volume for a long time. If your ears start to feel tinnitus or hearing loss, please turn off the volume or turn off the device. Once you lose your original hearing, you will never have it again. . . 3。 Whoever he is, if he pays too much attention to one thing, his attention will be out of focus. Similarly, music practice is the same.