Fifth Boss
While it looked the man did not wear the rubber armor just like the man with a big build mentioned. People tended to believe what he said since that was the plausible explanation why the emergency ax bounced back.
The man with a big build rushed toward Tang Shaoyang. He hacked the ax horizontally, toward the neck. It was just a bare neck, there was no such rubber armor.
Swoosh!
The man hacked with all his strength, hoping to cut the neck with one hack. Yet again, the same thing repeated. The ax bounced back, no, the ax flung away from the man's hand.
At this point, people were in a daze to witness the miraculous scene. The man was invulnerable to the ax for sure. It was a bare neck but the ax still bounced back.
The man with a big build panicked. He could not believe that the ax could not cut the man. In his panicked state, he drew his gun from and directed the muzzle toward Tang Shaoyang's hand.