Documents from the "Conference to Examine the Operations of the Fourth War Zone" which Zhang commanded, from January 1945, after Zhang's defeat during the Battle of Guilin–Liuzhou 桂柳會戰 after the launch of the Japanese Operation Ichi-Go (一号作戦) in November 1944. Materials include operation reports and maps presented by three army groups and five corps under general Zhang, as well as Zhang's speech evaluating the defeat.