Feng Jun had already negotiated with the True Immortal of the Taixu Sect about the auction, and choosing Central City would be best. Even though the East City Executor Master Moran was still in seclusion, that's not what's important. What's essential is that Central City has the largest flow of people, and the cultivators there have the highest cultivation levels.
In the East City region, you can count the Nascent Soul cultivators with just two hands. A character like Duanmu GuZhu dares to consider the position of East City Executor, whereas Central City has at least thirty to forty Nascent Soul True Immortals.
If the auction is thoroughly publicized before it starts, people from other sectors would naturally prioritize entering Central City, just given the convenience of transportation.
However, when it comes to auction publicity, the Taixu Sect probably won't exert much effort.
