I'm a long time Yang guy, who trained Chen for a bit but currently I dabble in Sun Style. I have been looking around the web at the Traditional Long form and I have noticed something, they are not all the same. Some have a jump kick and some do not. Now I have noticed it appears that the jump kick folks are all linked to Li Deyin and the non-jump kick folks appear to be linked to Madame Sun. But I have also noticed something else that may explain the difference. Those doing the jump kick are younger and those not doing the jump kick are older. I am wondering if, traditionally, coming from Sun Lutang if there is or is not a Jump kick?