Indeed, just as Liu Lili said.
They do have flesh and blood, but their skeletons and vital organs are metallic.
"So, these guys are artificially created?" Mu Rufeng spoke slowly.
"Not necessarily; the world is vast and full of wonders. You've seen the mechanical monsters of the Rule Clock; maybe these black-armored men are naturally such a species," Wang Luo said.
"That makes sense too. So, are these three living ones just going to stay like this?" Mu Rufeng looked at the three black-armored men who hadn't died yet and said.
"Let's leave it for now; give them an examination. It might be worthwhile to study them," Wang Luo nodded.
"Alright, let's do that. By the way, arrange a place for me to stay; I've lost my place. Also, make sure to treat these three black-armored men and don't let them die. Tomorrow, I'll interrogate them," Mu Rufeng said.
Although they spoke in another language, it didn't matter because Mu Rufeng had the ability for spirit communication.