i know cha wah shun, was a student of leung Jan, 2 other lines that come from him still have the 4th form, called the "bagua" form ( no relation to bagua zhang ) in one of them, because you move in 8 directions, to me, in my head anyway, that would be from the center to the trigrams, kinda like the end of cws's slt. which makes me think it was the 4th form added on. obviously just a guess..




ip chings, being of his own making... isn't anything to do with it at all... just to save confusion lol