C315 The Duke of Changsheng Had Appeared and the Duke of Changsheng Had Fallen(2)

As Su Yu delved deeper, the quantity of Energy Stones steadily increased. By the time he had reached seven hundred meters, his spiritual energy imprint marked every single one of them.

"Seven hundred meters and only ten thousand Energy Stones? The Fog Clan must be scraping the barrel," Su Yu muttered to himself in disbelief. Despite being primary ore veins