On the necessity of sticking to the guiding position of Marxism

China is carrying out the economic system with the public ownership as its main body and other ownership as its secondary parts.However,why we still stick to the guiding position of Marxism?The author points out that there are four reasons for us to hold firmly to guiding by Marxism:firstly,guiding our ideology by Marxism is determined by the characte of Chinese Socialism;secondly,guiding our ideology by Marxism is the choose of modern China;thirdly,guiding our ideology by Marxism is the summation of the experience and lesson of China and other socialism countries;fourthly,guiding our ideology by Marxism is the need to deal with the international competition.