He actually understood Rheagar's concerns.
Green River was only Rheagar's territory in theory. If he was shameless, he could pretend that he did not see anything. At most, he would just embarrass the Rolling Stone Kingdom.
However, once he was involved, all his actions would represent the image of the Rolling Stone Kingdom.
It was reasonable for a necromancer like Matthew to lead an undead army into the battlefield.
However, if a large number of undead units appeared in Rheagar's own troops or if the undead troops played a big role in the high-profile event of recovering the Green River, it was likely to cause another round of controversy.
Ordinary humans were still afraid of the undead.
This was also the reason why Matthew was paying more and more attention to the boundary between the cemetery and the gathering place of ordinary humans.
The future of the Rolling Stone Kingdom was destined to be limitless.