The demon longsword in Bai Yan's hand pierced through Dragon King Delagone's chest, completely shredding the organs within him, yet Dragon King Delagone managed to sustain himself for a few seconds through sheer strength.
In those few seconds, although all four of Dragon King Delagone's limbs were severed, he still used his mighty divine soul to imprint a mystical mark upon Bai Yan.
As long as Bai Yan is alive, this mark will continue to follow him, and all Dragon-man Clan members, upon nearing Bai Yan, will sense the mark on him and begin a relentless pursuit.
Of course, the stronger the existence, the farther away they can feel Bai Yan's presence.
This was also a fallback left by Dragon King Delagone to find Bai Yan faster after returning to his own body.
In fact, Bai Yan could have rejected the mark Dragon King Delagone imprinted on him. After all, in this Abyss World, he could have simulated a being similar to himself to fool Dragon King Delagone.
