Battle of Yongqiu - Zhang Xun's troops had run low on arrows. He ordered his troops to make about 1,000 scarecrows. He then ordered his soldiers to put their own armor onto these scarecrows. During the night, the soldiers hung the scarecrows down the fortress wall, so as to be easily seen. Linghu Chao noticed a number of armored black figures in the distance, and ordered his archers to shoot at them, hoping to stop the ambush.