Fu Zuoyi was a Chinese military leader. He began his military career in the service of Yan Xishan, and he was widely praised for his defense of Suiyuan from the Japanese. During the final stages of the Chinese Civil War, Fu surrendered the large and strategic garrison around Beiping to Communist forces. He later served in the government of the People's Republic of China as Minister of the Hydraulic Ministry.

Yan Xishan or Yen Hsi-shan was a Chinese warlord who served in the government of the Republic of China. He effectively controlled the province of Shanxi from the 1911 Xinhai Revolution to the 1949 Communist victory in the Chinese Civil War. As the leader of a relatively small, poor, remote province, he survived Yuan Shikai, the Warlord Era, the Nationalist Era, the Japanese invasion of China and the subsequent civil war, being forced from office only when the Nationalist armies with which he was aligned had completely lost control of the Chinese mainland, isolating Shanxi from any source of economic or military supply. He has been viewed by Western biographers as a transitional figure who advocated using Western technology to protect Chinese traditions, while at the same time reforming older political, social and economic conditions in a way that paved the way for the radical changes that would occur after his rule.