保定陸軍軍官学校
In July 1922, He Zhuguo arrived in Northeast China to join Zhang Zuolin, the Feng Department, and served as military instructor and director of the cavalry section of the Northeast Army Jiangwutang. In 1923, he was promoted to captain of the third team of the Lieutenant Colonel. Since then, he participated in the Fengtian Army and won the trust of Zhang Xueliang. In the spring of 1924, with Feng Yuxiang as the witness, He Zhuguo married Jia Chengjing, the niece of Jia Deyao, the former principal of Baoding Military Academy.