To those who practice Yee's Hung Ga here, I have noticed that his weapon sets differ from not only Lam Family Hung Ga, but also Chow Wing Tak's (also Tang Fong Hung Ga). Did Sifu Yee learn the weapons forms from a source other than Yuen Ling? I know the broadsword set is from CLF, but I am unsure of the provenance of the other weapon sets.

The only weapon set that seems to be shared among the different lines of Wong Fei Hung- Hung Ga is the pole, Ng Long Baat Gwa Gwun. The butterfly sword sets differ drastically, but the techniques are the same. Why is that?