Li Yao's ideal was to forge a powerful army capable of standing up to any legion, and his guild was not short of smart people adept at waging war, so Li Yao wasn't worried at all.
Once his Mechanical Army was truly in place, bolstered by abundant resources as a backup, and with his assembly line production model, he would eventually have an endless supply of legions to produce.
However, at this stage, he didn't have the capital to roam freely, just like this time when he deliberately avoided the Devil Tyrannosaurus legion.
It wasn't that he couldn't defeat them, but there was no sense in fighting to the death against Devil Tyrannosaurs, incurring heavy losses. Without sufficient resources, even if he could produce enough units, without them being refined through the Furnace, they would not be much use in high-quality battles.