Peng Wanli grimaced with a wry smile, "Doctor Feng has dealt with those Evil Spirits and Dark Souls, so the methods he's proposed are definitely the most effective ones available at the moment. Although this method is difficult, if one were to speak about it seriously, it's actually an excellent way of cultivation! I believe that if we cultivate through such means over time, the top echelons of our demon clan will definitely be able to take a big step forward in strength!"
The various Demon Kings grimaced and looked at each other, unsure of what to say.
An excellent way of cultivation?
Heh...
Perpetually burning the fire of one's soul, do you really not know how tiring that is?
"Demon King Rank experts can release True Spirit Fire, but if they sustain its burn, at most they can only maintain it for one hour. Moreover, releasing it a zhang away from the body is already the limit. And recovering afterward requires at least twenty-four hours of rest."