The situation Li Yan described could indeed arise in certain abnormal environments. For example, within spatial black holes, the laws of heaven and earth there were themselves maintained in an unnatural balance.
If someone cast a spell that happened to accord with the rules of a black hole, unpredictable effects could occur.
This was also recorded in some ancient texts Li Yan had read. The gravity of Black Flame Mountain itself differed from the norm, and based on Li Yan's understanding of the laws of heaven and earth, he could confirm that it was a special region formed by special natural laws.
He used this as his explanation. For the Great Devil Kings, who were likewise deeply versed in the laws of heaven and earth, they naturally understood what Li Yan meant...
After Wuran and the others questioned him and learned that the phenomenon had been caused by Li Yan's spell rather than some treasure, they reflected on it and did not pursue the matter further.
At that time, they still had to press onward with the extermination campaign. They had also captured Red-Eyed Flame-Horn Beast Clan cultivators alive and conducted careful Soul Searches into their ability to manipulate the rocks within Black Flame Mountain, obtaining the relevant explanation as well.
If the Black Devil Race would covet his spell merely for such a reason, Li Yan would never have dared reveal it. Naturally, he had considered everything thoroughly.
Li Yan's speculation about this outcome was ultimately confirmed after he left Black Flame Mountain and was summoned for questioning by that late-stage peak Great Devil King.
Now that the urgent task of clearing Black Flame Mountain had been resolved, it was absolutely impossible for the Black Devil Race to have no thoughts at all about Li Yan's performance there.
Calling