At Mt. Zuoyun, Ren Xiaosu led Ji Zi'ang on a walk in the wilderness with only the two of them.
"Bury a set of TNT here," Ren Xiaosu said as he looked at the map and pointed at his feet, "P5092 said that there'll be barbarian elites passing through here to provide cover for the expeditionary army's flanks."
With that, Ji Zi'ang followed Ren Xiaosu's instructions and placed the TNT on the ground. Then he controlled the soil on the ground to "swallow" up the TNT.
These days, burying explosives had become a technical skill. The barbarians had been blown up enough times that if the TNT were buried too obviously, it would definitely be discovered by the enemy.
There were many outstanding hunters in the expeditionary army, so it would be extremely easy for them to determine whether the ground's surface had been dug up before.