Fangtian Ji, a spear with crescent blades on both sides. This weapon had multiple means of attack: the side blade or blades, the spear tip, plus often a rear counterweight that could be used to strike the opponent. The way the side blades were fixed to the shaft differs, but usually there were empty spaces between the pole and the side blade. The wielder could strike with the shaft, with the option of then pulling the weapon back to hook with a side blade; or, could slap his opponent with the flat side of the blade to knock him off his horse.
The Ji is popularized through a historical character known as Lü Bu. His weapon of choice was the Fang Tian Hua Ji (方天画戟).