From what Shen Xu could see, the cave was one thousand square metres.
However, its size wasn't the most notable thing.
At a glance, the cave was a lake of flames. Green flames covered the floor and rose to the walls and ceilings.
"No wonder it's so hot." Shen Xu muttered but soon came to his senses.
"Green flames…, don't tell me… Brother Yuan, it's a wood element fire." The double exclaimed, his eyes gleaming from happiness.
When Shen Xu changed his cultivation technique, he learned about the element flames.
Essentially, the chaos fire comprised ten flames – fire element flame, wood element flame, water element flame, gold element flame, earth element flame, wind element flame, ice element flame, lightning element flame, dark element flame, and light element flame.
From his cultivation technique, Shen Xu needed to collect these ten flames and integrate them into his spiritual root fire.