Mystic earth essence energy.

This was an extremely rare energy. Although it was not a type of origin energy, it was comparable to one. As an essence energy that had formed over 10,000 years of slumbering underground, it was an existence at the level of a 10,000-year flame. It wasn't a vicious energy, yet it contained the attributes of vicious energy, granting it the ability to decay everything. 

It was incredibly useful, and if one could refine it into one's body, not only would one's combat prowess grow, one's offensive power would also increase. Furthermore, the mystic earth essence energy was also an excellent material for forming one's soul foundation, and it was much more valuable than the black tides mystic stone that Xiang Shaoyun had obtained not long ag...