The following is based on Fallout 2 cut content and has not been confirmed by canon sources.
“Perfect for the task at hand. You see, not all of my experimental creatures have been as successful as the specimens you see here. Most tend to end up being mindless, violent brutes. I keep these failures locked within a pen in my lab, but they recently got loose. I managed to get out and lock the door before any could escape into the wild, but now I am unable to return to my lab.”
Sheng Ming was the Shi's most accomplished scientist, head of the Xeno and Botany programs. Her experiments with plants created a species of vine that could safely absorb radiation.
She also canceled the FEV program on the behalf of the recently-deceased Dr. Wang.