In the broken city, Yu Hao and Diqin Naxi were exploring around. The stone flooring beneath their feet was actually paved with hard Imperial Gold Stone.
Imperial Gold Stone was a type of top-grade construction material that was extremely rare in the entire universe.
It had an extremely good ability where it could absorb and transmit the power of divine runes. Moreover, it was also extremely hard. An ordinary Divine Runemaster's full-powered attack wouldn't be able to leave a mark on it.
It was used to build arrays, forbidden grounds, and luxurious palaces. Those sorts of structures were all of the highest grade.
Even Yu Hao, the Azure Emperor Clan's ancestor, didn't have the luxury to use Imperial Gold Stone as pavement. Moreover, this was such an inconspicuous small city.
The potential crystal that Diqin Naxi mentioned was in this very place. It seemed like she wasn't lying.