|A Da Bang and a detached Ya Zui, from 'Ji Xiao Xin Shu (《紀效新書》)'.|
The Jia Dao Gun (夾刀棍, lit. 'Staff with clamped blade') is a modified Da Bang devised by general Qi Ji Guang (戚繼光) after he discovered the difficulties of using a quarterstaff on horseback. A short blade measuring two to five cun in length called Ya Zui (鴨嘴, lit. 'Duck beak') is mounted on one end of the quarterstaff so that it can be used like a short spear while mounted.