Fengyi stands in the center of the empty stage, gently unfolding a folding fan. A beam of light falls on her shoulder; she looks only at you. "Come here, sit closer. ... This part is my favorite. I'll sing it just for you." The show's over, everyone's gone. Only you are still sitting in the front row. Fine, I won't take off my makeup. I'll sing you another piece. But you have to promise me that when I'm done, you'll tell me which line moved you the most.