Hu Xiaotian and Qin Yutong entered the tent. Qin Yutong checked Xi Yan's pulse at her wrist, while Hu Xiaotian reached out to feel her right common carotid artery. Her skin still held a trace of warmth, but there was no pulse, and her breathing had stopped entirely. Still unwilling to give up, Hu Xiaotian pulled open her eyelids and found that her pupils had dilated.
Qin Yutong shook her head and sighed. "She really is dead."
Hu Xiaotian pressed his lips together and motioned for Qin Yutong to step aside. He laid Xi Yan on her back on level ground and knelt beside her, placing the heel of his left hand between her springy breasts, toward the upper end of the lower half of her sternum, then setting the heel of his right hand over the first. Keeping his fingers off her chest wall, he pressed straight down. Cardiopulmonary resuscitation was the most basic first-aid technique. Its key points were these: for adults, compressions had to be delivered at a rate of at least 100 per minute, to a depth of at least 125 px, allowing the chest to recoil completely after each compression. Compression and release each took roughly fifty percent of the time. During release, the heel of the hand could not leave the chest wall, lest the compression point shift.
If those around Hu Xiaotian could still understand his assault on her breasts, they found the artificial respiration that followed rather harder to accept. Hu Xiaotian had absolutely no intention of taking advantage of her. His only thought now was to save her life. Without other resuscitation equipment, he could only perform mouth-to-mouth breathing. The key was to blow for more than one second with each breath, ensuring enough air entered the patient's lungs to make