tears for the Party's mistake and held Trường Chinh responsible. The failure of land reform in northern Vietnam was the turning point of the political faction. The Sino-Soviet split reduced China's influence in Hanoi. Trường Chinh resigned from his post of the secretary general of the Communist Party of Vietnam. Since then, Hồ Chí Minh supported Lê Duẩn, who later became the most powerful and longest-serving leader in Vietnam. In the 1960s, Lê Duẩn became the most powerful Communist leader while Trường Chinh was still on the list of the Politburo and a member of the central committee of the party. He still maintained his role in the party's think tank. Cultural ideology and strategy After the declaration of independence in September 1945, Trường Chinh played an important role in shaping the administration of the Democratic Republic of Vietnam politically and economically, as well as creating the socialist structure and culture of the new Vietnam. He considered culture as a vital strategy for national liberation and nation-state building. In Vietnam, Trường Chinh was named as the architect of the foundation of the new culture of Vietnam because his cultural ideology had a great impact on Vietnamese society through many concrete ideas and policies. His works that have affected the Vietnamese society were the 1943 "Theses on Vietnam Culture (Đề Cương Văn hóa Việt Nam)" and the 1948 “the Marxism and Vietnamese Culture” (Chủ nghĩa Mác và vấn đề văn hóa Việt Nam). In the first work, "Theses on Vietnam Culture," Trường Chinh presented two main cultural patterns: the foundation of the new Vietnamese culture under the leadership of the Communist Party, and the use of art and cultural concepts as a weapon against national enemies. He argued that Vietnam had fallen under the influence of Chinese culture of feudalism, French colonialism and Japanese fascists. In order to liberate Vietnam from these cultures, the Party needed to create a new culture (văn hóa mới). The essence of the new culture focused on people and adopted a new democratic approach. The second work, "The Marxism and Vietnamese Culture," Trường Chinh suggested the cultural revolution as a tool to fight the French colonial government under the principle of Marxism. The significance of culture was equal with the military and economic battle fronts. These two works became the fundamental elements to Vietnam society and culture and brought big changes to Vietnam society, particularly after