Yang Huiren is a Chinese 1-dan professional, now living in the United States (where he tends to be called Huiren Yang).
In 2010, he won the North American Ing Masters Tournament.
Co-author of Cosmic Go.
There is a biography at http://www.usgo.org/NAMT/players/hyang.html .
He plays as HYang, somerville and sususu at KGS.