Jian (3.5e Equipment)
From D&D Wiki
The Jian is a double-edged straight sword used during the last 2,500 years in China. It has a hilt to protect from opposing blades, and is often equipped with a tassel at the end. The Green Destiny sword from Crouching Tiger Hidden Dragon is an example of one of these blades.
They are very light and fairly flexible. The Weapon Finesse feat can apply to this weapon as such, even though it is not a light weapon. Like the rapier, you can’t wield a jian in two hands in order to apply 1½ times your Strength bonus to damage.