第二次直奉戰爭
After the disastrous defeat of 1922, Zhang had reorganized his Fengtian Army, started a training program and bought new equipment, including mobile radios and machine guns. In the autumn of 1924 fighting broke out again in Central China. Zhang saw an opportunity to capture North China and Beijing and become head of the central government. While most other warlord armies fought along the Yangtze River, Zhang attacked North China, thus beginning the Second Zhili–Fengtian War.