San Sau also called San Shou in mandarin means free hand, another name for
this is also called san da or free hit. It is part of the Chinese martial
arts, where you spar and use practically any technique that’s available.
San sau free movement has no restrictions.
Actually many martial arts really rely of this kind of training to
become proficient in their fighting skills. Chow gar Southern Mantis is no
different. Like learning the mantis 36 san sau drills, once learned fully
and understood its methods and applications, you then put then in any practical
order and then eventually free movement would naturally develop.