The Cardiac Surgery Story of Gu Yan and His Six Wives

(First paragraph) Gu Yan, director of the Department of Cardiac Surgery, can complete an eight-hour operation, but he cannot handle his life with seven alarm clocks: morning rounds, scientific research meetings, consultations with patients and children, birthdays of his wife and children, parent-teacher conferences, wedding anniversaries, and mother-in-law's physical examination day. He's like an overused needle, torn between professional responsibilities and family commitments. (Second paragraph) The six wives protected him in their own ways: Su Qingyuan would massage his temples between operations; Lin Xi folded the legal opinion into a plane and slipped it into his pocket; (Paragraph 3) When Gu Yan received notification of the first child heart transplant and that his daughter had a 40-degree fever, six pairs of hands reached out at the same time. How many hearts are needed for this operation called "life" to beat normally?