Sea of Secrets
The black market of the Western Guardian Sect City didn't have an ordinary background, for it was spread throughout the entire Spirit Inferno Domain, and the person who established it was an unknown expert.
The formation used to hide the black market was enough proof of this unknown expert's resourcefulness, and despite being a lawless place, no one dared mess with the black market's mysterious management.
The reason for its popularity was simple: all kinds of goods, from treasures to slaves, even stolen goods, were sold here without question, and those who had the privilege of knowing about this place had something in common: they all wanted to hide something.
Although Ace was aware of the concept of the black market, even he had to admit that the scale of this place was extremely huge, and they were fearless while running this kind of place right under the Artifice Inferno Guardian Sect's nose.