In the midsummer of 2025, the blazing afternoon sun penetrated the glass curtain wall of Jingzhou First Hospital, the top hospital in China, and cast variegated light and shadow on the mirror-smooth marble floor. However, the operating floor of the cardiac surgery department of the hospital does not feel a trace of heat. The central air conditioner accurately controls the indoor temperature at 22 degrees Celsius. This temperature is called the ideal temperature for surgical operations. It can not only prevent doctors from being distracted by the heat, but also minimize the risk of postoperative infection for patients.
