Furthermore, the amount of sevoflurane used by the perpetrator on the victim may not have been large. The perpetrator only needed the victim to be temporarily unconscious for a few minutes to complete the murder.,Gu Yan glanced at Jiang Yunbai in the passenger seat and said sincerely.,Gu Yan couldn't help but think of Jiang Yunbai's domineering old-fashioned car when he took his driving test for the practical exam. He stood on the side of the road and saw it.。