She had just injected Dr. Sun with a Zombie Virus extracted from zombies. Because it was very pure, once it entered Dr. Sun's body, his body slowly began to mutate. The mutating process was extremely painful, a result of the Zombie Virus remodifying his body. During this process, with some luck, one could awaken and become a superpower user; less fortunate ones would turn into senseless zombies.
Unfortunately, the process was too long, and Fang Yuxin couldn't possibly stay there for such duration. Thus, she quickly took out the syringes and kept injecting Dr. Sun continuously. She wasn't aware of the specific purposes of these messy injections and had administered them haphazardly, causing a variety of changes in Dr. Sun's body.
