The revolution in China developed over decades rather than instantly like Russia's. Chinese communists faced stronger opposition than Bolsheviks in Russia. They gained most early support from peasants rather than workers as in Russia. They established deep roots among peasants by fighting Japanese invaders in WWII, unlike Bolsheviks who urged withdrawing from WWI. Despite early successes, by late 1970s communist economies were not catching up to advanced capitalist countries and the excesses of Stalin and Mao undermined claims of moral superiority of communism.