There used to be a sect in the mountains and seas that could manipulate copper-armored corpses, and that was the Xuanshi Sect. However, even Golden Core cultivators like them could hardly manipulate copper-armored corpses without special techniques.
It can be seen from this that the young man in the picture must be inextricably linked with the Xuan Corpse Sect, or is the remnant of the Xuan Corpse Sect.
Thinking of the scene of the destruction of the Xuan Corpse Sect back then, the expression of several Jindan monks couldn't help but change slightly. At that time, they were just foundation-building monks.