Abstract: The experience of the Party's centenary struggle and the major achievements show a clear internal context:"advancing the sinicization of Marxism in the times" is the weapon for the CPC's century-old achievements. "Correctly grasping the principal contradiction and the central task of society" is the only way for the CPC's century-old achievements. "Attaching importance to strategic issues" is the key measure for the CPC's century-old achievements. "Preserving the Party's true nature as a Marxist party" is the fundamental guarantee of the CPC's achievements in the past 100 years. It is of great value to clarify why our Party was successful in the past and how it can continue to be successful in the future.

Key words: Communist Party of China, Marxism, strategy, principal social contradiction, self-revolution