With a 75cm blade. Chinese straight & double-edged swords are usually called Jian while single-edged are called Dao. Primarily served as status symbols, such design hasn't been changed for almost 1,000 years whilte Dao had went through huge changes. Jian would either featuer a round tip like this or an acute tip that's better for thrusting. Some may refer Jian as super light thrust-centric weapons, but they are actually quite good at cutting and a good amount of them are not ligher than Dao of the same period.