The mid-1940s, the Chinese history have had a very brief special moments. After the victory, the Communist Party of China and the Kuomintang during the war forged Japanese national united front has ceased to exist. With the support of the United States, the Kuomintang army massive attack on the liberated areas, army and people under the leadership of the Communist Party of China, resolutely defend itself against the Kuomintang military offensive combat ...... the face of the serious situation in China is about to erupt in civil war, U.S. President Harry Truman to adjust its China policy , former Army Chief of Staff Marshall retired school will be on a five-star presidential special envoy to China for military mediation, set up a three-member panel of military and military mediation under the leadership of the Executive Department. For a time, wearing a blue three-ring flag State of the United States tripartite personnel active in the country, to stop the military conflict, the establishment of peace and democracy. TV series "blue ring", reflecting the military, political and diplomatic aspects of this period of intense struggle complicated.