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: He tested his men by shooting at his favorite horse, then his favorite wife. Those who hesitated were executed. Finally, during a hunt, he shot his whistling arrow at his father, Touman Chanyu . A cloud of arrows from his loyal guard followed, killing his father and making Maodun the supreme leader of the Xiongnu.

: These arrows featured hollow bone or metal tips with holes. As they flew, air rushing through the holes created a high-pitched, terrifying whistle. : He tested his men by shooting at

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. during a hunt

The query refers to the book (2004) by V.P. Nikonorov and Y.S. Khudyakov. : He tested his men by shooting at