Marx's thought on the "Two Nevers" and socialism with Chinese characteristics

Marx's thought on the two nevers emphasizes that the development of productive forces is the decisive role on the relations of production changes and the replacement of the social formation,and reveals the general law of the social patterns’ changing,and is the brilliant summary of the Marxist historical materialism;and shows us the most fundamental thing of development of socialism with Chinese characteristics is to vigorously develop the productive forces,the development of socialism with Chinese characteristics must take full advantage of capitalism.