The funny thing is that component movements of the Islamic martial art of 'Chaquan' looks identical to our 'Hakka' Longfist Style - even down to the applications - but Longfist is generic and certainly not rare! It comprises hundreds (or thousands) of Northern Styles and is common-place (it has even penetrated a number of Southern Styles). We all approach these movements from our different lineage perspectives - but all traditions use the 'external', 'Internal' and 'Integrated' aspects of ancient Chinese science.
My research suggests that the Qin Dynasty (221-206 BCE) instigated a country-wide martial culture - probably through a specially constructed manual comprised of illustrations and basic directions. As the Qin Emperor expanded the model of the Qin State (originally situated in Northwest China) across the whole of the conquered territories of what is today considered 'China' (which excluded at the time the swamp-infested area of what is now Fujian province) - this 'unity' of culture spread over a massive geographical area and converted every village into a military barracks - and ordered that every local man, women and child became a 'soldier' serving the Qin State whilst having to train in a standardised martial art (both 'armed' and 'unarmed').
This makes Longfist over two-thousand years old - and pre-existing the arrival of Muslims in China by about 1,200 years! The Arab merchants constructed their Chaquan version of Longfist from what they saw around them in the areas of China they had settled within (possibly acquired from the families of the Chinese women they married). Of course, this specialised Longfist was then taught to non-Muslim Chinese people (for various reasons) over-time - so that today Chaquan is practiced by millions of ethnic Han people - as well as Hui Chinese-Muslims. Hakka gongfu is typically 'Confucian' with Buddhist and Daoist overtones. There are theories, however, that suggest the 'Qin' and 'Han' Dynasties may have been 'Hakka' - that is founded by displaced peoples who originally lived on the edges of geographical Northern China (before migrating Southward) and which had developed cultures that mixed 'Han' and 'non-Han' (Barbarian) cultural elements together.
This history is disputed, but certainly DNA studies have linked (modern) Hakka women living within South China with (Evenk) women living today in Siberia. Certainly, our Spear Forms were originally practiced (in-part) whilst riding a Steppe pony and gripping and steering the animal with the legs - whilst keeping the hands free to wield the spear from one side to the other without striking the animal's head. Later, when ponies were nolonger available - the 'Horse Stance' was developed to take their place in training. The 'Horse Stance' used to prepare the practitioner by building the lower-body strength for riding a Steppe pony through 'holding' the stance for long periods of time. Today, most practitioners use this method for strength-building - but have no knowledge of the historical development behind its structure.
Shifu Adrian Chan-Wyles (b. 1967) - Lineage (Generational) Inheritor of the Ch'an Dao Hakka Gongfu System.