This was an armory.
Magic artifacts could greatly enhance the power of a martial artist. A first-grade magic artifact could even double a martial artist's battle power, which was simply defying the heavens!
However, getting a magic artifact that suited oneself was extraordinarily difficult. It was of course easy for someone in the Open Heaven Realm to get a magic artifact of the Land Cleaving Realm, whether by smashing spirit stones, trading treasures, or simply snatching it by force.
But getting a magic artifact of the Open Heaven Realm was difficult!
First, one might not be able to afford the price, and even if one could, there would be competition. If everyone was from the Open Heaven Realm, they would naturally all have similar financial capabilities, making it hard for anyone to dominate the others.
Second, no one would be willing to trade such treasures. For martial artists, strength was everything!