Everbody must hate the enemy, defenses must be constructed step-by-step, fortifications must be strengthened, the enemy must be exterminated

人人敌忾,步不设防,坚强壁垒,制敌死命
Renren dikai, bubu shefang, jianqiang bilei, zhidi siming
Everbody must hate the enemy, defenses must be constructed step-by-step ...
ca. 1937
Junshi weiyuanhui zhengxunchu (军事委员会政训处)
55x39 cm.
PC-1938-004

Picture 1 is top right, 2 bottom right, 3 top left, 4 bottom left.