The sudden chime of a system notification caught Shi Feng off guard.
"It unlocked so quickly?" Shi Feng looked at the system notification in surprise.
NPC city Auction Houses differed from those built by players. Like shops, they could continuously be upgraded, except their upgrade requirements were far harsher than those for player shops.
Not only did they need to meet a certain daily traffic requirement, but they also had extremely high transaction volume requirements. And it was not enough to meet them just once; they had to be maintained for a considerable period of time.
Generally speaking, NPC Auction Houses would not be upgraded until after players reached Level 100.
That was because only after reaching Level 100 and obtaining a title in that NPC city could players enter the Auction House's Noble District.
The Auction House's Noble District held tremendous appeal for players. After reaching Level 100, it represented the core value of NPC Auction Houses, something Auction Houses built by major powers simply could not compare to.
This was because the Noble District served as a trading platform for noble NPCs. Put simply, the items consigned there came from NPCs, not players.
One had to know that the items possessed by noble NPCs were anything but ordinary. They were far more valuable than the goods sold by wandering NPC merchants, and sometimes even Epic items were available for sale. Furthermore, both the quantity and quality of consigned items in the Noble District were tied to a city's prosperity. The more prosperous the city, the greater the quantity and quality of items consigned in its Noble District.
This was also why the major powers had wanted to develop NPC cities in the previous life. This was especially true for the various superpowers. The more prosperous an NPC city