As the army was the one who conducted the raid, Lei Cheng (offside note: Lei Cheng is the military commander in LongHai Survival Camp) had misappropriated a lot of medicines and kept them as his personal stash. However, these medicines were all for his relatives, his personal aides and himself. There is no way he would share the medicines with anyone else. Xu Zhengang is not a personal aide of Lei Cheng, and could not even get hold of any medicine from Lei Cheng.