The strategy for achieving these aims of becoming a modern, industrial nation was the socialist market economy. Deng argued that China was in the primary stage of socialism and that the duty of the party was to perfect so-called "socialism with Chinese characteristics", and "seek truth from facts". (This somewhat resembles the Leninist theoretical justification of the New Economic Policy (NEP) in the 1920s, which argued that the Soviet Union had not gone deeply enough into the capitalist phase and therefore needed limited capitalism in order to fully evolve its means of production.) The "socialism with Chinese characteristics" settles a benign structure for the implementation of ethnic policy and forming a unique method of ethnic theory.