Where i find it?

Shoutout to a random korean website showing the new locations, anyways
interact with one of the big blackstone crystals for knowledge

https://imgur.com/gallery/Od0thCJ
Starten bei Fadil
https://bdocodex.com/jp/npc/47400/
und dann rechts in die Mine rein !

in the mine inside the city, goto Fadil and the entrance to the mine It's there

When you enter the city where the NPC Fadil is there are multiple ways to get into the mine, take the LEFT one that is easy to miss when you ride past. Follow the mine almost til the end. Check the screenshots of the others to see the exact location.

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While you hunt this knowledge, go get this one too which is 30 meters from it.
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Pendant que vous chassez cette connaissance, récupérez celle-ci qui se trouve à 30 mètres

teşekkürler