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: These arrows featured hollow bone or metal tips with holes. As they flew, air rushing through the holes created a high-pitched, terrifying whistle.

The query refers to the book (2004) by V.P. Nikonorov and Y.S. Khudyakov. : These arrows featured hollow bone or metal tips with holes

Invented by (r. 209–174 BC), the whistling arrow ( ming-di ) was more than a weapon; it was a psychological tool and a mechanism for absolute command. Nikonorov and Y

: In battle, these arrows served as sonic tracers to coordinate fire against a single target, allowing thousands of archers to strike with surgical precision. 209–174 BC), the whistling arrow ( ming-di )

: To seize power, Maodun used these arrows to train his 10,000 horse-archers in "blind obedience". He established a rule: wherever he fired his whistling arrow, every soldier had to fire in that exact direction immediately.