Netherworld Poison Flame!
The enormous toad in the lowlands immediately surfaced in Xiao Yan's mind.
He had been poisoned, lost consciousness, and been brought here precisely because he had been struck by a wisp of the Netherworld Poison Flame's poisonous fire.
"The world is vast, and every Heavenly Flame has its own unique traits. Take your Myriad Beast Spirit Flame, for instance. It was born in a place where countless beasts perished, and the shadows of those beasts gallop within its flames. It can manifest thousands upon thousands of Flame Beasts and command hordes of beasts.
"As for the Netherworld Poison Flame, besides being a Heavenly Flame, it is also one of the most poisonous things in the world. To subdue it, you must first possess an extremely strong resistance to poison.
"In other words, a person must withstand a Heavenly Flame's terrifying heat while also being immune to its lethal poison. Someone with the woeful poison body meets that requirement.
"Like the woeful poison body, the Netherworld Poison Flame feeds on poison to nourish itself. If someone with that physique refines the Netherworld Poison Flame, they can transfer the excess poison within their body into the poisonous flame.
"Then they can absorb and refine the poison within the flame, wisp by wisp, forming a perfect cycle."
After hearing the old man's explanation, Xiao Yan realized how important the Netherworld Poison Flame was. If possible, he had to try to secure it for Xiao Yi Xian.
Yet just as Xiao Yan began to feel a little reassured, the old man added, "However, once the woeful poison body awakens, whatever attribute its bearer's Dou Qi once possessed will mutate into poison-attribute Dou Qi.
"And for someone without the fire attribute, the difficulty of controlling a Heavenly Flame increases more than tenfold."