Seeing how Guard Wu was refusing to make eye contact with him, Fu Hao Xin basically understood what was happening and couldn't help but feel complicated.
Of course, it couldn't be said that Guard Wu was abusing his power either. As a kid, even if he was willing to go into battle and even if others were willing to let him risk his life, at the very least, he would never be at the forefront. Perhaps in a place with a little less morals, they might even cheer him on and let him go out on his own as he wasn't a local, but that wasn't the case here.