The three-sectional staff (sanjiegun) is a Chinese flail weapon. The weapon is made up of three wooden sections connected by metal rings or rope. The staves can be used to strike around a shield or defensive block or spun to gather momentum for a powerful strike.

The three section staff can be uses as a long, medium and short range weapon. It can be used to strike, block, trap, disarm, choke, flail and whip, often performing two functions at the same time