Apart from the Mechanical Puppet Legion's continued frenzied battle that lasted until nearly dawn, in fact, the other legions had basically collapsed.
It wasn't that their strength was inferior to Li Yao's legion; in reality, if there was a genuine comparison of strength, Li Yao's legion was still far behind them. It was just that they had been outmaneuvered by Li Yao from the very beginning.
The Worm Tribe was just too bizarre, with the battle situation turning very unfavorable as soon as it began. Moreover, as the war raged on, all the scouts sent for mutual communication were being hunted and killed. Occasionally, a scout would reach another battlefield, but the news they brought back was infinitely despairing.
Thus, from the start until now, they had been fighting isolated battles, despite their leaders claiming that reinforcements would arrive soon. But since the beginning of the fight, not a single reinforcement had been seen.