Language: Mandarin Chinese
Source: Classical literature
Lěngyànjù (冷豔鋸) is an alternative name for the qīnglóng yǎnyuèdāo (青龍偃月刀) or "Green Dragon Crescent Blade", a mythical polearm wielded by general Guan Yu in the 14th-century historical fiction novel "Romance of the Three Kingdoms":
"Yun Chang made the "Green Dragon Crescent Blade", also known as the "Cold Brilliant Saw", weighing 82 jin."1
For more information, see: qīnglóng yǎnyuèdāo (青龍偃月刀)
1. Sanguozhi Tongsu Yanyi (三國志通俗演義) or "The Romance of the Three Kingdoms". Attributed to Luo Guanzhong who lived somewhere between 1315 - 1400. The first official printed edition of the work was in 1522 with a preface date of 1494.