Earlier, outside he'd seen hundreds of wooden barrels. With four burial chambers plus Zhuge Liang's own tomb, the oil they'd actually used was less than half a barrel.
Most likely the rest had been hidden underground by Zhuge Liang. Now that the bomb's power had been unleashed, the fire spread and ignited the oil deeper below the ground.
Once the oil down below caught fire, the heat it gave off had no way to dissipate, and that's what caused the explosion.
"Zhuge Liang is really fucking ruthless, he's trying to wipe this whole place out."
Xia Liang thought to himself.
The man was ruthless enough: lure everyone into the deepest part, then destroy the place. No matter how fast you were, there'd be no way to escape.
The ground was still shaking. Everyone was climbing out along the guiding ropes they'd set up earlier, but they were still too slow.
