Crouching Tiger, Hidden Dragon Tips

Flying: Apparently the Lost Art
Although some of the other main characters may be able to fly, much of the time they will only jump, as will any others that fight against you, from the lowest man up.

This means that if you need temporary relief from a battle, you can typically jump and fly somewhere else for a while. This works best for Li Mu Bi.

Also, it is a combat advantage. Always use it to the best of your abilities. Rarely will the enemies expect you to come from above if you drop quickly enough.