We've known that these islands are based on Japan's Okinawan islands for a while. Kazuha's mats are still present too and nobody else's. (The busted pirate ship is also still there. Right and there's more references to that this time with the talking boat quest.)
But after Fischl's mirage appeared we were suddenly able to farm another mat. Just like in Mondstadt we suddenly had Mona's mushrooms growing out of the Mondstadt styled buildings.
Here's my question: This is still a mirage right? It was all created by the Fatui's machine and none of it actually exists. So how are we able to collect anything from one of these mirages?
This time I'm actually asking. I have no idea what this could mean. Kusanali's power is what this machine was trying to replicate but that means the Fatui technically can make stuff out of nothing. Like maybe Mora. 
Tips and Tricks from a Super Casual Genshin f2p
