Yang Family Tai Chi Discussion Board

I'm trying to figure out if anyone knows of an instructor in their lineage or some kind of information about a man named Li Zhi Shen (not sure if it's spelled this way, but that's how his name is pronounced). He was a teacher in the 1970s and 1980s at Beijing Wushu Academy or Beijing Sport Academy. It's possible he taught somewhere else, but that's the most information I know. I also know he trained with Yang Chengfu and some other cousins of Chengfu around the 1920s - 1930s. Does anyone have any other information about him or know about him?

Thanks in Advance.