For this Knowledge u need to do the Puzzle with the levitating platforms in Vaha
u wil need 3 man to do it

You can reach the last platform by lowering the platform and flying over from the highest point of the bridge with a jump buffed Lahn. You'll still need someone else to raise it though

要 4 個人才能解。（單人故事副本的話是光球完全沒反應）