"The Dancer of Death's Throat," this Divine Art, Xitan Pulan was bound to acquire sooner or later, but not now.
It was one of the key ability branches of the Half-Dead Woman.
This Divine Art, by emulating the concept of "The Pale Princess and Her Lover," anchored a willing spirit to serve as one's "Dance Partner."
Many of the crucial abilities in the later stages for the Half-Dead Woman were related to her dance partner.
Be it swapping places with the dance partner, exchanging states; or letting the dance partner control one's body after entering a spiritual state. One could also use the dance partner as a "casting base station," to extend the range of spellcasting indirectly by casting through the dance partner.
It's like the relationship between a Hunter and their pet... A Hunter without a pet is soulless.