Before Chu Feng destroyed the wild region's Slave Chamber of Commerce, even the beggars on the streets of the wild region knew that there was an "underground" auction.
The underground auction might not necessarily be built underground. It could be held in the sky, underground, or underwater. As long as it was their territory, even the most famous palace hall could host an underground auction.
The palace was a well-known faction in the eastern divine region. Of course, that was 10,000 years ago. It would not be an exaggeration to say that the current palace was a lackey of the underground auction.
Time passed and the once massive entity had been suppressed to the point it was on the verge of extinction. The underground auction was not only held in the wild region. Its strongholds were spread across every corner of the eastern divine region. Basically, anything related to bloodlust would have traces of their involvement.