Song-Peï Taoli, Captain of the Tiger Guard of Dong Yi

Despite the triadic militia watchtowers, it seems that an ennemy manage to break through the wall, without making any noise. The only clue we have is this weapon i don’t recognise. This is not an avalonian blade and even less a triadic one. We never saw any Aurlok or khaliman using this kind of weapon, moreover this does look like their usual art. Whose blade might it be ? Are there a new blacksmith in the region? Is it the result of a new alchemical experience ? The only question that matters is : friend or foe?