The Great River District has a black market, a fact known to most people.
Or rather, there exists a black market in any district.
It is specifically designed for rogue cultivators to trade in items that are not quite presentable.
Take Wang Yuan for example, who has done dirty work for Broken Mountain Gang in the past.
However, most of the things he sold at the rogue cultivator markets were lower grade and medium-grade magic tools, knowledge regarding foundational beginner's techniques, or books of lesser value such as "Records of the Customs of Six Realms".
Given the vast influence of the Broken Mountain Gang, was this the level of illicit items they needed to handle?
Obviously not!
Items that were a bit more high-end could easily involve enemies.
Hence, most of them were tossed into the black market for transactions.
However, even black markets had their highs and lows!