In accordance with the opinions of the Political Bureau, Renmin Ribao of June 20, 1956 carried an editorial entitled ``Oppose Both Conservatism and Impetuosity'', pointing out that in the course of the vigorous development of China's socialist construction cases of impetuous and rash advance, of attempts to exceed real possibilities, were emerging. Thus the various localities put stress on solving these problems. In his speech at the Third Plenary Session (Enlarged) of the Party's Eighth Central Committee held in the autumn of 1957, Mao Zedong began to criticize the 1956 effort to oppose rash advance and, at the Nanning Meeting of January 1958 and the Chengdu Meeting of March of the same year, he subjected it to further severe criticism. The 1958 counter-criticism of the critique of rash advance caused ``Left'' ideology to grow rapidly within the Party.