Zi (Ran) Men ?
I know of Zi Ran Men, Natural Gate Fist. It has no set forms only internal and external strength training.
If its the same system then it was made popular by Wan Lai Sheng.
Cheers
Buddhapalm
"In heaven and earth no spot to hide;
Bliss belongs to one that knows that things
are empty and that man too is nothing.
Splendid indeed is the Mongol longsword
Slashing the spring wind like a flash of lightning !"
Monk Wu-hsueh Tsu-yuan - Reciting as the Mongol sabers slashed towards him. The Mongols spared him out of respect. For no ordinary man recites a poem facing death.