Peter rushed in, his coat disheveled, "How is she?" "Blood oxygen saturation is dropping, the patient is in a coma, and her heart has stopped... The situation is critical." The more dangerous the situation, the calmer one must be. Ada's face had turned grayish-white, her lips were purple, her pulse couldn't be felt, and her heartbeat couldn't be heard... "Cardiac resuscitation." Peter took a painful breath; he had never seen Ada so weak. If only he had paid more attention to her, she might not have ended up like this. A desolate emotion slowly spread from the bottom of his heart, like a drop of ink falling into colorless pure water, gradually turning the water black. During the lengthy rescue, Ada's heartbeat gradually recovered. As if experiencing a brief res