Defend our hometowns! Defend our fatherland! (Bi Cheng, China, | History

Defend our hometowns! Defend our fatherland! (Bi Cheng, China, 1951).
The poster is presumably aimed at Chinese soldiers fighting in the Korean War. A demonic Douglas MacArthur is attempting to throw a bomb over the wall to China, aided by another leader (perhaps Syngman Rhee?). Source