In the narrow space, the air circulation was not good and was a little stuffy.Zheng Ren's every step was steady. The patient was semi-unconscious so there was no need to communicate. He only needed to do the corresponding anti-shock treatment.Prepare sterile bags and medical supplies for the intervention.The staff at the back who prepared medical supplies probably did not know what Zheng Ren needed nor could they ask him, so they brought him a variety of tubes and medical supplies.Zheng Ren picked out the medical supplies he needed and brought them down. When he was ready, he suddenly felt the ground shaking.There was nothing he could do. Zheng Ren smiled and began to sterilize the small space in a rough and casual manner.Opening the outer layer of the sterile bag, Zheng Ren put on the sterile gloves without washing his hands.In such a simple and crude environment, there was no way he could. He could only try his best to be sterile.