C1141 The Tiger Shark Clan

This black iron was not the black iron used to refine mortal weapons in the sect grounds. It was a thousand year old meteorite at the bottom of the sea that had been refined and polished over a hundred days. The toughness of the black iron was self-evident. What was even more unbelievable was that it contained an existence similar to Gu poison, Gu Curse.

Gu Curse