Ye Gu had lived in Autumn Maple town for most of his life. This was the first he knew that there was an underground volcanic crater in Seven Star Mountain.
This volcanic crater had a lengthy history. The lava inside was as hot as fire, and when they placed the ore with rust moss into the lava, the impurities and rust moss on the dark iron ore peeled off like a cracked old tree bark when it met with the golden-red lava.
The size of the dark ironstone was increased by 50 to 60%. Ye Gu took out the dark iron ore and looked at it, his eyes widening.
He was not seeing things, was he? 60%! This was a rare dark iron with 60% purity.
It took only half the time to purify the iron ore with lava, and the composition of dark iron jumped to 60%. Ye Gu had never imagined such an unexpected gain.
This time, if it wasn't for the Song family using the frozen grass, the Ye family would not have used the lava by accident.