Submit and prosper, oppose and perish
The number of modified vehicles that Bai Zemin mobilized for this operation was only 30 units. Most of the vehicles were freighters with just enough food to last for three days. However, given that the number of soul evolvers was over 700 men and women, the amount of food could not be underestimated.
The soul evolvers possessed more powerful bodies and contrary to what was expected or depicted in the cultivation novels, the more powerful the body was the more energy it consumed to maintain itself and therefore the more food they needed to consume to keep up. The only way to counteract this was to consume meat or derivatives of high-level creatures.
For example, First Order mutant beast meat possessed enough nutrients that even people at the level of Bai Zemin and Shangguan Bing Xue could eat like normal humans and not have to eat like pigs.
Bai Zemin hoped that this matter would be settled in the higher stages or otherwise it might present some problems.