I think I read somewhere that Yin and Shi were cousins but maybe they were just friends. http://wulinmingshi.wordpress.com/category/shi-style-baguazhang/
That article is great k-man. I don't know if they were related. Its a shame shi baguazhang isn't as popular because shi's inside connection with dong sounds interesting. Shi may have somethings that dong parted to him. I'm going to look it up in Chinese see if any books say anything more.
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