Xun Country's cannon fodder soldiers, in groups of hundreds or thousands, blindly pushed forward into the dense forest. Wiped out they might be, but as long as they could advance to the next hill and establish a camp, the immortals would rush over to set up defenses and formations, shrinking the encirclement significantly. Yes, it's the advantage of overwhelming numbers over the few.
With the overt and covert support from Mountain Heng and the allied demon races, relying on the advantage of numbers and non-stop attacks day and night, they pushed the frontline over mountain after mountain, uprooting the spiritual nodes of Luo Fu Mountain, sparing no expense in manpower, step by step compressing Luo Fu's mountainous area. Occupying the outer mountains would completely seal the mountain's spiritual veins, eventually leading to the establishment of a grand formation to besiege the Heavenly Demon Cave of Luo Fu.