Bi, ax, C-dragon are usually seen in Hongshan Culture. This artifact has been dexterously combined the three into one piece. This was an artistic achievement five thousand years ago. The sizes of bis are increasingly larger from the top to the bottom. There is a dragon with S shape like those in the Warring States ( the S shape dragon may be derived from Hongshan culture) on one side with the head lies clockwise along the whole of the middle bi and the tail lie anti-clockwise along the hole of the bottom bi.
The edges of the whole ax has been sharpened like blade. With streamline carving and mastery workmanship, this Tri Bi Ax is similar to the one ( H.6.4 cm) unearthed from graveyard in Hutougou village, Fuxin County, Liaoning Province, a collection of Museum of Liaoning Province. Antiquity evidences include differential weathering, additive crystal and diffusive markings. 红山文化玉斧L.29cm,W.13cm, 1020g。 本器上窄下宽, 形状如同三個連結一起的玉璧, 边缘斜磨似刃, 一面为素面, 一面有呈S形非典型的C龙纹饰, 龙身龙尾呈斧形, 刀法流畅, 自然增生晶体, 冰裂纹, 差异风化等古玉现象明显。