The smell of disinfectant has not dissipated yet, and Qiu Daye's fingertips still have the astringent feeling of the suture needle penetrating the flesh. She had just completed a six-hour mandibular angle osteotomy. When she took off her mask, a tired but sharp face was reflected in the mirror - the corners of her eyes were slightly raised, and her lip lines were clear. She had a sharp look that she had practiced on the operating table and at the negotiation table for many years.