I came across a video on Youtube of William Cheung doing biu jee, and I was surprised to see him stepping and doing kicks. Some sections looked like they came from the dummy form. (I'm going by the knowledge I have of the way forms are done in MY lineage. I study under Sifu Russell Cichon, who has been accepted as a student by Yip Ching.) This has me wondering how he performs sil lum tao and chum kiu. Does anyone know of any footage out there that shows him doing those forms?