Finding treasure chests in "Oath" is the key to achieving Pathfinder's achievements. Fortunately, it is not difficult to find all treasure chests. Before finding Galawen's fangs' treasure chest, you need to obtain the treasure map one first, find a corpse in the twisted ruins, and after taking it, a small boss will be triggered.
Where is the swearing fang chest?
Treasure Map One: Ancient Arrow
A corpse in the twisted ruin will trigger a small boss after taking it
Treasure chest: Come out from Yanyuan Farm and walk along the cliff and you can see the treasure chest
Treasure Map 2: My Loyal Shield
Purchase from merchants at the Southern Watchman Tower
Treasure chest: Start from the Shuangmulin North Beacon, go around the edge of the cliff as shown in the picture, go up the stairs and a table and hidden doors inside. Pay attention to the direction of the pipe, and interact with the buttons on the table to open the door.
Treasure Map Three: The Hungry Blade
Purchase from the merchant in front of the Edica shrine on the third floor of the Fortress in Weihuai
Treasure chest: Starting from the Ashes Forest as shown in the picture, note that this cave is not obvious and you need to look for it carefully
There is a place to jump down at the end. Don't jump down, you can see the treasure chest when you look back