 Complete the following phrase:  Since earlier periods of the CCP, Mao Zedongs emphasis on collective farms as the correct form of rural socialism differed from Liu Shaoqi and Zhang Wentians line of supporting the supply and marketing cooperativeSMCs. Gao Gang was a prominent leftist and a staunch supporter of Stalins and Maos model of bolstering collectivization. Zhang Wentian clashed with Gao Gang when Zhang strongly criticized the idea of organizing all peasants into mutual aid teams. Soon afterwards, the CCP suddenly appointed Zhang as a Chinese delegate to the United Nations without consulting him. Zhang reluctantly accepted the post and repeatedly made pleas to return to his job in the economic sector, but they were ignored. In April 1951, Zhang Wentian was appointed as Ambassador of China to the Soviet Union. Zhang Wentian paid attention to studying international issues and actively submitted the analysis and policy proposals to the Central Government. For instance, the report on the first armistice negotiations in 