I have a personal theory-CLF was originally a Hung Kuen system.
Hung-Ga forms are both kuen-faht (Fighting techniques) and Gung-Faht (power developmental techniques) in their forms. They are played slower, with emphasis on rooting and one breath, one strike power generation.
But nobody fights like that.
So here comes this young upstart, Chan Heung. He starts playing his Hung-Ga forms, the same way he fights-fast, aggressive, barrages.
His Sifu scolds him saying,"No! You cannot play the forms like that."
Chan argues,"Why not? You should fight the way you train! If I want to develop power, I'll just develop some cool dummies, with weighted arms an' stuff"
"Look, Ah-Chan," an exasperated Sifu said, trying to retain his composure.
"You just can't. It wouldn't be Hung-Ga."
"M'Hai Ngoh-ge Kuen-Faht!" (It's not our method)
"Choy Lei Faht!" (Blast your method!!) the young Chan responded.
"I'll just call it something else!"
-the rest is history (his story)
("Choy!" is a term used to blast away bad luck, demons,gwais, or spells)
"My Gung-Fu may not be Your Gung-Fu.
Gwok-Si, Gwok-Faht"
"I will not be part of the generation
that killed Kung-Fu."
....step.