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In the world of Europe and America, the exchange activities between the supernatural research organizations— or more precisely the public supernatural research organizations— started in the 1980s. Normally, an event is held every two years.
These exchange activities often take place in historically mysterious locations, and everyone takes this opportunity to exchange important information and items during this time.
Undoubtedly, such exchanges are very valuable, and it is because of these meetings that the mystical research organizations throughout Europe are now able to share resources to the greatest extent.
The benefits of this sharing are twofold: one is to avoid redundant research as much as possible, and the other is to piece together incomplete clues to unearth more leads.