I have never seen Leung Sheung system. What are the main differences?
Everything... is the main difference.
It's really bizarre. Very low sunk stance, sometimes 100/0 weight distribution, with every arm action done very low, even punches.
When explaining his DCS I was on top with fuk-sau and very slowly he left contact under my arm and was expecting me to do something, not sure what. I said I need do nothing and would just punch straight. Then he said he would allow that and receive the force with his bong-sau that was too low and when raised led my fist straight to his mouth/nose. I said right into your face? and it didn't seem to bother him... Bizarre like I said.
He then said if something goes too high for his bong he would use his other hand to inside paak. I thought we were still doing DCS, but maybe he was talking about other situations.
Then switching sides, after I did the vertical palm he asked me to start doing bong-sau for no apparent reason and I guess he was going to do something to it. I don't know. I couldn't really follow what he was trying to do.
It was all very slow motion, energy trick stuff he was trying to get me to play along with. But to do that I would be forced to keep my arm very low and chase his and bong-sau nothing for no reason. That is tearing at my heart, you know, having been trained to punch the way I have.