In reality, the Free Trade Zone in the Huatian Palace had long been established as the largest trade market in the ancient martial arts world. Many ancient martial art factions were manipulating the trades behind the scenes.
For example, some shipped their sects' resources to the Huatian Palace for trading through the Huatian Palace's Executors, who then earned many Contribution Credits that were used to redeem items from the Huatian Palace Redemption Main Hall.
For the outside ancient martial art sects, all the resources available in the Huatian Palace were things that were highly sought after. Every item was a rare treasure. Because they didn't have the right to redeem items directly in the Huatian Palace, they could only ask for the help of the Huatian Palace Executors.