He was ordained Coadjutor bishop of the Roman Catholic Diocese of Jingxian (Hengshui) on January 6, 2004.

The regular bishop of Jingxian, Mathias Chen Xilu, had been in a coma since 2002 after a stroke.

His predecessor, Bishop Peter Fan Wenxing, was retired and lived in a small congregation.

Feng became the first priest with a higher academic degree from abroad who was bishopriced for the Catholic Church in China after the religious policy of the Mao era was laid down in the 1980s and the religions were allowed to rebuild their work.

He had also studied in Manila before returning to China, and taught English and philosophy at the regional seminar in Shijiazhuang, capital of his home province.