Step of the Dancing Moth (Original) p. 80
You focus your inner reserve of ki energy to generate flowing shadows that lift you off the ground. You walk across the roughest ground, even water, with ease.
While you are in this stance, you can walk up to 5 feet above the ground. Your speed becomes 20 feet while you are in this stance, and you cannot run. You ignore any terrain feature that fails to project more than 5 feet above the ground, such as difficult terrain, burning lava, water, and so forth. In addition, you ignore the standard penalties on Hide and Move Silently checks for moving quickly.