Chen Yan Xi , Chen Fake’s father , was the Chen family Taijiquan’s 16 Generation patriarch . Chen Yan Xi was the Chief bodyguard for Du Yen, a powerful official . Chen Yan Xi was also Du Yen ‘s son Du Yu Ze’s Teacher. This form is representative of the Chen Family Lao JIa Yi Lu Form before it was modified by Chen Fake. This form actually is in the same postural sequence as the Yang family Taijiquan.
This is the form that BP Chan taught .
Chen Xin”s complete esorteric book on Chen Family Lao Jia Yi Lu Taijiquan : see link below
This is Master Du Yu Ze (杜毓澤) who was a disciple of 16th generation representative of Chen Family, Chen Yan Xi (陳延熙). He demonstrates the Old Frame form in this videos. Master Chen Yan Xi was a father of 17th generation representative Master Chen Fa Ke.