"Sign it, and the wedding will go ahead as planned." Lin Wanxing pushed the cornea donation consent form toward me, her eyes red, yet her tone was as casual as if she were discussing the wedding menu. I looked at the face I'd spent seven years with and suddenly found it unfamiliar. "He's blind. I'm the only one who can save him." She clutched the pen, her knuckles white. Outside the window, it was two in the morning. An ambulance screamed past the hospital entrance. I didn't touch the form. I simply took the wedding ring off my left ring finger and gently placed it in the box marked "Family Member's Signature." Then I turned and booked a ticket on the next flight to Boston. Five years later, at the International Medical Awards ceremony...