Until very recently, this was a 'secret' martial art only passed-down between father and son - and only then if the son had passed the government examination AND acquired the post of a local official. Within the Chinese language, this art is known as '双判官笔' (Shuang Pan Guan Bi) or:
Shuang (双) = Referring to a matching 'pair'
Pan Guan (判官) = 'Judging Official' or 'Magistrate'
Bi (笔) = 'Writing Brush' - that which records 'Legal Decisions'
This martial art was only to be practiced by families that practiced law and dispensed 'justice'. As this could be a dangerous occupation due to the nature of the people being tried - and the severity of the 'Sentences' handed-down - it was not uncommon for Judges to be attacked by entire groups supporting the accused (usually families - but sometimes just criminal gangs)!
Shifu Adrian Chan-Wyles (b. 1967) - Lineage (Generational) Inheritor of the Ch'an Dao Hakka Gongfu System.