Chapter 543 This is a Copper Wall and Iron Barrier_1

The steamed-up Quicksand soldiers could only continue their charge forward. The Sandpeople with small figures that could have entered the underground tunnels perished as soon as they entered, after being shot by the Shadow Shooters.

"Our tunnels are exceptionally made, albeit too few. If we had more, we would definitely have given those Sandpeople a thrashing. If we had been able to build slits to provide cover for our archers to shoot from within, it would have been even better." Du You found this Otherworld form of tunnel warfare quite effective, even more so than on original earth.

Because his enemies only got bigger the higher their level.

"Lord, you're correct. Unfortunately, we were pressed for time. After this battle, we can excavate the mountains around us, interconnect them, and form a comprehensive three-dimensional defense system," replied Luo Jia.