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蠡角第七十三
黄帝战蚩尤，吹角，长六尺，声甚呜。后有涿鹿之败，帝问曰：所吹何物？蚩尤曰：角也，吹之则风雾俱集。后以六尺曰角，五尺曰蠡。近世列阵，金鼓之外，馀无他声号。或阵形长为山谷所掩映，虑不能照，宜于阵两稍为蠡角（随牌大小增之）。值敌攻稍，则吹之为号，中军吹而应焉。
虎钤经 · 许洞 · Chapter 81 of 218
蠡角第七十三
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