The 3 hand forms of the Buk Sing CLF lineage originated with the Fut San Hung Sing Kwoon as they were basically created by Hung Sing's first inheritor Chan Ngau Sing. Ping Kuen, Kau Da Kuen and Sup Ji Kuen are the product of one extremely long hand form called "Nei Wai Ba Gua Kuen or In and out Bagua Kuen (Internal-External)" as passed down to Jeung Hung Sing by the monk Ching Cho (Green Grass). These are the same forms passed down to Tam Sam by his Hung Sing Kwoon sifu Lui Chun.

In CLF you will find other forms with the Siu in the name such as Siu Ping Kuen, Siu Kau Da Kuen, Siu Lin Wan Kuen, Siu Sup Ji Kuen are basically the smaller version of certain forms or sets. In some cases the SIU forms posted on the internet are nothing more than the BIG Hoi Jong finished up with a few moves shortly after. Others are just shorter forms minus the long beginning or Hoi Jong and representative of said forms.

That is all.

Viva La Hung Sing