For the past three months of voyage in Wei Country, Ning Fan didn't cultivate demonic arts. Instead, he used the Burning Blood to refine Burning Blood Pills.
The pills were Three Revolution Pills which could improve the Colossal Bone Secret Arts' level. They can also raise the Body Refining Realm.
But a side effect existed in consuming pills. The pills would make the one who take it experience agonizing pain or worse, turn them mad.
The madness could only be appeased by killing someone.
After discovering that one had to join forces with Jin Country's cultivators to eliminate the demons in order to borrow the Teleportation Formation, temptation as well as caution appeared in Ning Fan's mind.
Involving himself in the killings was a good chance for him to release his pent-up killing intent after consuming the Burning Blood Pills.
However, he was cautious about the man who moved towards their direction with haste.