C620 No One Could Solve It.

Yang Xifeng quickly analyzed the green saliva that Lin Yang spat out. "Dr. Qin, Lin Yang's saliva is filled with fungi. Some of the bacteria are very powerful, and they are extremely aggressive. They are the killers of the immune system. Our current technology is unable to do anything about it."

Although Yang Xifeng did not finish her sentence, everyone understood that they were helpless