C190 At the End of the Sea of Fire

Zhou Heng knocked on the back of Ai Sha's neck forcefully and broke Ai Sha's spine. Following that, he used Soul Fire to connect Ai Sha's broken spine to Ai Sha's body to repair it so that she wouldn't die from this injury.

Before her spine was repaired, the Soul Fire could not act as a nerve bundle to use, so even though Ai Sha's mind was still under the control of the Dragon King