"Yes, this was Fu Qian's sudden stroke of genius.
He needed to deal with an entity that even the warehouse thought transcendent forms could scarcely confront, using his mortal body.
It was abstract, but since it was such an undefeatable adversary, why not outsmart it with wisdom?
For instance, by opening one's mind, completely abandoning self-consciousness.
He had already witnessed that the Holy Grail could even infuse knowledge into the undead. Could it possibly achieve something to the extent of Bairluck Town's "Brain Dance"?
Once successful, he would be an anchor point with the least threat for it, an excellent tool.
Perhaps it wouldn't spare him in the end, but before all other informed personnel were eliminated, he would most likely be safe.
However, to the unseen adversary, he would still be an existence that must be eliminated.