C2263 Nine Samsara Saints
The War Slave was not destroyed, but had an immortal divinity. Gu Fei's Arcane Art of Spirit Seizure and Dao Sword of Primordial Spirit techniques were all aimed at the soul and consciousness and did not harm the battle body.
Gu Fei successfully used the Dao Sword of Primordial Spirit to cut off the spiritual will of the original War Slave