Renting a courtyard

Right before Duncan's eyes, a familiar figure was being led on a leash toward the interior of the black market.

Slavery wasn't a very prominent thing in the Dragon Scale Continent. However, Duncan had heard that it was very prevalent in the Central Continent. Seeing such a scene happening to someone he knew was a little jarring to Duncan.

Duncan knew that there were different kinds of slavery practiced by cultivators in the cultivation world. Some cultivation clans often raised cultivators who would later become slave warriors who performed very dangerous tasks for the clan. Some demonic sects bought mortals as slaves for various cultivation purposes. Some young masters of powerful factions raised beautiful women as their slaves and cauldrons. 

While this wasn't anything surprising, such unsavory business was always kept on the low end of public visibility. However, this being the Dark Star City, such things were not taken into consideration.