What are the 'Yee Jee Yum Yeung Dit Ming Dao (Parallel Yin Yang Life-Taking Knives)'?

[marcoma]

I've heard of these 'Yee Jee Yum Yeung Dit Ming Dao (Parallel Yin Yang Life-Taking Knives)', and I was wonderiong if they are a version of the butterfly knives used in Wing Chun.

I can't seem to find a picture of these on the internet. Can anyone explain to me what they are exactly, and if there is somewhere I can see a picture.

thanks
Marco

[reneritchie]

They're what lineages like Yuen Kay-San/Sum Nung and Gulao/Koo Lo call the double knives, same basic blades as the Yip Man system (what they call Baat Jaam Do), just different name.

Po-tay-to Po-taa-to, but with all the deep symbolic import, 'natch.