The Auction House, an addition from this game update, was designed exclusively for players.
Before players, also known as God's chosen ones as per the game's NPCs, appeared, there were no auction houses in the entire game world.
The Auction House is a convenient place where players can post items they no longer need. All players in Doomsday City can see these items; this is much more convenient than previous street vending.
However, selling items in the Auction House incurs a 5% listing fee, so the prices of the items listed are generally quite high.
Upon hearing the term "Auction House," Song Jian became greatly interested. He could sell items to NPCs in various locations via the radio station, but this was highly inconvenient as it incurs hefty postage fees. It wasn't nearly as convenient as the Auction House.
With this in mind, Song Jian couldn't sit still. He immediately stood up, got on his motorbike, and sped off toward the Auction House.