On deepening and developing Marx's surplus value theory

The surplus value theory is a foundation stone of Marx's economic theory.Yet the form of distribution according to capital confirmed by the 15th National Congress of the Communist Party of China has caused disputations.Some people think that whether the surplus value of Marx's theory is out of date and no longer suits socialism or whether the theory of three elements i.e.capital,land and labor prove to be practical,the Party accepts the latter with acquiescence.Undoubtedly,further research into this economic theory will redound to understanding Marx's theory about surplus value .