Imitating playing the piano means putting your hands flat on the table, gently pressing down, and then raising one finger at a time as high as possible. In other words, you might as well pretend to be practicing playing the piano. Its function is to stretch the palm and fingers, so that both hands can imitate playing the piano, which is light and agile. This exercise is to put your hands flat on the table, press down gently, and then raise one finger at a time as high as possible. This sport can also be said that you might as well pretend to practice playing the piano. Its function is to stretch your palms and fingers, which will make your hands light and agile.