So, as the lore goes - Yang Lu Chan studied with the Chen family in Chen Village and then went to Beijing to teach there (his village near Beijing). He also taught his three sons. As time progressed, his elder son Yang Ban-hou became very famous and eventually draw the attention of the Ching royal family. He was asked to become the instructor for royal family and imperial guard.
Since he didn't want the secrets to be taught to the manchus, he created the long form (108) and taught that. This provided health benefits but didn't teach the martial secrets.
Does anyone have any alternate version of the story? Or material from the Yang Family that denies this? (please provide specific material towards that end if possible).
Thanks in advance.