‘Echoes of Old Battles’ quest walkthrough in Where Winds Meet

The “Echoes of Old Battles” quest in Where Winds Meet takes place in a rather creepy old fortress now known as the Northern Vow Ruins. But the most daunting thing about this side quest isn’t the dead soldiers, nor the living bandits, but the wall puzzle, which seemingly requires knowledge of Chinese signs (here’s a hint: it doesn’t).