Care to elaborate?Yes, there are different ways of breathing that raise and sink qi. A reverse breath will cause a Ha sound. Look at Fujian white crane, the sound vibrates inside the body. Then it became okinawan crane, then Karate and they project the sound outward..why? Because they are ignorant. It was an incomplete transmission that became popular due to dumb luck and politics. Its a crappy art, better to go to China and learn white crane.