Although the ghost has no combat power, it can merge into any object and won't be harmed by any physical entity.
Only soul power can eliminate or detect it.
But this soul power must be stronger than Ling Xiao's to achieve that.
Ling Xiao used his soul core to emerge and control the ghost to track the Red-Robed Envoy. If he hadn't seen that City Patrol Guard Captain, he wouldn't have shown himself.
If he hadn't revealed himself, no one could have discovered him.
"Even if you don't answer, I know it's you! A few rebels dared to chase and kill the Tianhai Empire's Emissary, you're courting death?"
The Red-Robed Envoy questioned.
Ling Xiao remained silent, yet his eyes turned to the captain of the City Patrol Guard. Although the ghost lacked physical attack power, it could conduct a soul attack.
"Selling your daughter for glory, despicable!"
