Yidu weaponry includes straight Tibetan sword , dagger , bow and poisoned arrows .
The Idu men wear a sword and waterproof cane helmet , and a chignon on their hair and shields made of buffalo hide .
Idu weaponry includes straight Tibetan sword , dagger , bow and poisoned arrows .
The Idu men wear a sword and waterproof cane helmet , and a chignon on their hair and shields made of buffalo hide .