follow the villager link in obtained from tab, there's a shai npc in the house at that location. speak to her and she will give you the knowledge

to obtain this knowledge, you need to talk to the shai in the same room where Ficy are

Alternative you can get this knowledge from this questline:
https://bdocodex.com/th/quest/2011/1/

To start quest, path to NPC Dora Fonti in Heidel and get the quest : The Rise of the Xian Alliance

Once you've completed the entire 3-part quest chain all the way to "Understanding the Politics of Heidel", you'll unlock these 2 knowledge :

1. Xian Alliance
2. War & Mediah