第二次直奉戰爭
Fengtian chambers of commerce were also incredibly important. They were used to monitor the business environment and encourage commerce and trade. They assisted in supplying the Fengtian Army and levying taxes for Zhang Zuolin. Many business leaders came from the bureaucratic group that participated in the provincial assembly, so their interests were represented through Zhang Zuolin. However, business interests did come into conflict with Zhang's political interests sometimes, especially during and after the Second Zhili–Fengtian War. When wars did not provide immediate benefits for the Manchurian economy, doubts started to surface about Zhang. However, Zhang still held authority over civilian organizations and government organs in Fengtian. Zhang used these organs for his own interest, including using the Fengtian Chamber of Commerce in protesting against Japanese demands in 1927.