C223 Irreplaceable existence

The sound of footsteps came from outside. It was soft and slow, and with the orderly tapping that seemed to have become his signature. She didn't even need to raise her head to know who it was.

However, she still raised her head and looked at the man's calm and tranquil face. "Why do you want to ask me about this? Why do you want to know about this song?" She did not try to hide the zither music