陳廷棟陳奉章傳 [19 & 20] CHEN TINGDONG & CHEN FENGZHANG 皆陳有本門弟子廷棟於拳外善春秋刀 Both are students of [[Chen Youben]]. Beyond the boxing set, Tingdong was also an expert at Spring & Autumn Saber. https://brennantranslation.wordpress.com/2017/08/31/taiji-boxing-according-to-chen-ziming/