The people of the Alliance of six realms were good at using Dharma artifacts. Some of them were the best at using Dharma artifacts, such as elder sun's two-piece black sword and elder Wu's array board. Of course, they had other Dharma artifacts, but they were the best at using their own Dharma artifacts. The other Dharma artifacts they used were very similar to their own Natal Dharma artifacts in many cases. For example, elder sun was good at using all kinds of flying swords, and elder Wu's Dharma artifacts were mainly based on arrays.
As for those at elder sun's and elder Wu's level, their magic tools naturally couldn't be ordinary goods from the continent. They had all been carefully selected.