<title>Chen Geng-Yun</title>
The father of both Yannian and Yanxi was Chen Gengyun (陈耕耘). As the tree shows, Gengyun was of the same generation as the other t'ai chi ch'uan practitioners including Yang Luchan and Chen Qingping (陈清萍). Both Luchan and Gengyun were students of Chen Changxing (陈长兴).
Son of Chen Chang-Xing.
陳耕雲傳
[14] CHEN GENGYUN
耕雲陳長興子家傳太極與陳仲甡陳季甡等同擊洪楊惜其戰績今已無人能道矣子延年延熙能繼其業
Gengyun, son of Changxing, learned Taiji as the family tradition. He fought against the Taiping forces alongside Zhongshen and Jishen, but unfortunately his own military successes are all but forgotten. He has been remembered for his longevity and youthfulness.https://brennantranslation.wordpress.com/2017/08/31/taiji-boxing-according-to-chen-ziming/