In Chinese language, the word "dao" usually refers to any single-edged blade. Single-edged blades had been used in China as early as the Shang Dynasty and the dao has taken several variations throughout the different dynasties. 

The Qing Dao is the single-edged blade used during the Qing Dynasty (1644-1912). It was a common cavalry and infantry weapon characterized by a single-edge, slightly-curved and single-handed blade. It is a sturdy weapon which is good for chopping and slashing. The slight curve also makes it effective in the thrust. 

The Yanling Qing Dao has a beautiful blade made of folded steel. The scabbard is hardwood with red laquer and brass ornaments. The handle is hardwood wrapped with black cotton cord for additional grip. The disk-shaped handguard is made of brass.