1931年“九·一八”后,党为了建立全民族抗战的抗日民族统一战线,共同抵御日本侵略者,在复杂的形势下,把原则性与灵活性有机结合起来,表现出高超的策略和斗争艺术。中国共产党在建立抗日民族统一战线的实践中积累了丰富的经验,丰富发展了马克思列宁主义思想理论宝库。 After the “September 18” campaign in 1931, in order to establish an all-nation anti-Japanese united front against Japanese aggression and jointly resist the Japanese aggressors, the party has organically combined principle and flexibility in a complicated situation and has shown a superb strategy and Struggle art. The Chinese Communist Party has accumulated rich experience in the practice of establishing the anti-Japanese national united front and enriched and developed the treasure house of Marxist-Leninist ideological theory.