Actually the Chan Family has placed a Memorial Stone Tablet in King Mui of the History of CLF & it does include Cheung Yim (Zhang Yan). It says, after Chan Heung accepted Cheung Yim from Tang Xi Village in King Mui County as his disciple in Hong Kong, he sent Cheung to Singapore, Hong Kong, & then to Fo Shan (Fut Shan).
I don't hear much of Chan Heung's eldest disciple Loong Gee-Choi, is there any of his branches in America or around the world?
"The Dragon and the Tiger met in Heaven, to revive our Shaolin ways"