After 1949, although the Shaanxi-Gansu-Ningxia region, especially Gansu, had been liberated, Zhang Shiguang, the leader of the remnant KMT forces, insisted on "resisting the uprising and being loyal to the president", gathering scattered soldiers and habitual bandits to collude with local bandits to form a powerful bandit force, colluding with several gangs of fierce bandits that were already active in the surrounding areas, killing district and township grassroots cadres, robbing people's property, and carrying out reactionary propaganda, becoming a major scourge of New China. The Northwest Bureau of the Communist Party of China and the Northwest Military Region issued instructions on bandit suppression, sending revolutionary fighters headed by Zhou Zhengyang and Huang Yifei to form a heroic and invincible "Wolf Capture Team" to encircle and suppress, turning the tide, fighting a series of beautiful ambushes, and completely annihilating the bandits in the Shaanxi-Gansu-Ningxia region, making an immortal contribution to stabilizing the situation in the northwest.