Fatui Agent Locations in Genshin Impact can be found across the Teyvat map find them to farm Sacrificial Knife and Insignias.
Map

The one highlighted in red is found inside the mountain. Look for the tunnel that passes through.
Fatui Agent Locations in Genshin Impact can be found across the Teyvat map find them to farm Sacrificial Knife and Insignias.
The one highlighted in red is found inside the mountain. Look for the tunnel that passes through.