The fact that Nigo was still alive...
was not because Fang Hao had any use for him.
It was simply because Nelson was busy working on converting the vampire into a skeleton hero and wasn't available to transform Nigo.
Killing him now, in the middle of summer, would be unpleasant and could potentially dampen everyone's mood.
So, Fang Hao figured he'd just lock him up for a few days, wait for Nelson to finish the conversion, and then decide what to do next.
However, upon hearing Nigo's words, Fang Hao fell into deep thought.
The information he had about the Skullcrusher Tribe was scanty at best. If he could somehow sneak a spy into their ranks and get them to gather intelligence about the enemy's next moves, it would be a rather good idea.
"You can get into the Skullcrusher Tribe?" Fang Hao halted his departure and turned his gaze once again to the shadowy figure in the iron cage.