On January 29, 1941, the Chinese Communist Party Central Committee's Revolutionary Military Commission issued an order to rebuild the new fourth Army Department, appointed Chen Yi as deputy chief of staff, Zhang Yuan as deputy chief of staff, Liu Xiaobo as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of staff, Zhang Yuan as chief of