This third spiritual body was Song Shuhang's ghost spirit.
The ghost spirit was one with him, so when his consciousness was drawn over by Pavilion Master Chu's secret technique, the ghost spirit's consciousness was also drawn over and transferred to the strand of hair.
Under normal circumstances, the appearance of a ghost spirit should be exactly like that of its host. However, Song Shuhang's ghost spirit had a completely different appearance from him, and it was female on top of that.
Moreover, his ghost spirit's consciousness appeared to be very young, only about five or six years old.
Strange, why is my ghost spirit's consciousness so weak? Song Shuhang thought to himself, wondering if there was something wrong with his ghost spirit.
"Do you see? This is your ghost spirit's consciousness." Pavilion Master Chu moved past Song Shuhang, reaching out to hold his ghost spirit in her arms like she was holding a baby.