“七路半”毛泽东与傅作义早在全面抗战爆发之前就开始交往了。那时，傅作义任国民党绥远省政府主席、国民党第35军军长。为了联合傅部抗日，1936年8月14日，毛泽东写信给博，说：“琢州之战，久闻英名……先生北方领袖，爱国宁肯后人？保卫绥远，保卫西北，保卫华北，先生之责 “Seven-and-a-Half” Mao Zedong and Fu Zuoyi started their contacts long before the full-scale war broke out. At that time, Fu Zuoyi Ren Kuomingtang Suiyuan provincial government chairman, 35th Army commander. In order to unite FU BU against Japan, Mao Zedong wrote to Bo on August 14, 1936, saying: "The war in Zhuozhou has long enjoyed a reputation ... Mr. Northern leaders and patriotic people would rather be future generations? To defend Suiyuan, safeguard the northwest and defend North China , Mr.’s responsibility