He served successively as Brigradier-Commander of the Vanguard Force of the Expeditionary Army to Mongrolia. Chao Yu-chin served as a Garrison Commander of Paotao, Suiyuan. In 1917 he was appointed Garrison Commander of Ningpao, Ningxia.
Mr. Chao was a senior staff officer at the Headquarters of the Military Governor of Shansi and concurrently superintendent of the Highway Construction Administration of Shansi province.
Chao Yu-chin took up the post of a director of the Preparatory Office of the North-western National Highway System in 1921. He was a Chief-of-Staff to the Headquarters of the Tutung of Suiyuan. Mr. Chao held the post of a Commander of Cavalry Division of the Vanguard Force of the Northern Punitive Expeditionary Army in 1925.
Since 1927 Chao Yu-chin resumed his office as Commander-in-Chief of the Honan Provincial Military and concurrently Commander-in-Chief of the Honan Bandit-suppression Forces. He also served as a Garrison Commander of Western Honan. Then Mr. Chao worked as a member of Honan Provincial Government, Mayor of Chengchow Municipality and concurrently Garrison Commander of Chengchow, Pacification Commissioner of Shansi, expert attached to the Ministry of Industries, President of the National Goods Emporium at Shanghai, member of the National Flood Relief Commission and concurrently special Commissioner of the Commission stationed in Hunan.
In the 30s of the 20th century Chao Yu-chin served as a member of the Shensi Provincial Government and concurrently Commissioner of Reconstruction.