Dao sword
From Tardis Wiki, the free Doctor Who reference
Dao swords were Chinese swords with curved blades.
On 1807; the Thirteenth Doctor, Yasmin Khan, Dan Lewis, Zheng Yi Sao, and Sin Ji-Hun use dao swords to fight with Sea Devils led by Marsissus. (TV: Legend of the Sea Devils)
Chinese magician Li H'sen Chang uses a dao sword to 'threaten' his dummy Mr Sin. (TV: The Talons of Weng-Chiang)