The Blood Soul Pacification Spell was refined from the primordial Blood Soul Grand Curse. The Blood Soul Grand Curse was an extremely powerful curse back in the ancient times but lost its glamor after being studied extensively and broken down. However, it had finally resurfaced after so many years.
But ironically, its reappearance came from the leader of the holiest sect in all of the Divine Lands. And the man that he was using the curse to kill was his own predecesor, which also happened to be the previous leader of the holiest sect.
The dark streak of red light moved from Yan Nanlai's body onto Yan Xinghe, resulting in the visible trembling seen on Yan Xinghe's body.
The red light was not causing harm to Yan Xinghe, but it was initiating an enormous change from within.
It was a kind of spontaneous harm which began from within. It began by building up its power from within Yan Xinghe's body before exploding out after completing its preparations.