Nan Xiao

She was the only daughter of the previous Master of the Medicine Order and Wei Yiyi's junior sister. Years ago, when Wei Yiyi was being forced to surrender the Treasury of Medicine, it was Nan Xiao who had placed her own life in danger and secretly broke her out of her prison. If it weren't for Nan Xiao, Wei Yiyi would probably have died at the hands of that wretched couple.