Xiayuan Hospital was formerly known as the First People's Hospital of Sanxiang. It was a prestigious tertiary hospital in central China before the doomsday. Moreover, the nation's most authoritative human disease genetic research center belonged to it. As a result, a large group of people would queue up for registration at 4 or 5 o'clock every day. But even so, it was indeed difficult to get a chief physician's number, not to mention those top experts. Before doomsday, the hospital could provide ordinary people with a little medical service. However, after doomsday, it had utterly become a private hospital of the privileged class.