Let me answer that. When you say no nails, you must mean that your left hand has no nails and your right hand can't have no nails. The advantage of wearing nails is that you can play a bigger piano sound, but without nails, you can better control the dynamic timbre, and at the same time, you can increase the vibration of playing and highlight the right hand sound. After a long and painful practice without nails, the left hand can grind calluses, which can enhance the sound intensity of the left hand when playing again, but the sound intensity will not be as sharp as when there are nails. Through control, not only will it not affect the timbre, but also because it is plucked with the fingers of the flesh, it will produce a soft accompaniment timbre with better effect. This is also the reason why teachers like to play without nails in their left hand. I have seen Wang Zhongshan play with my own eyes. His left hand does not have nails, but it hurts his hand. That's why the ancients had the story of blood-stained strings. Of course, some songs are not suitable for people without nails. I hope you like it and are satisfied with my answer! It is original!